Mention new branches in the doc pages

.github/PULL_REQUEST_TEMPLATE.md

@@ -2,7 +2,7 @@
 
 - [ ] Read the [contribution guidelines](https://github.com/openapitools/openapi-generator/blob/master/CONTRIBUTING.md).
 - [ ] Ran the shell script under `./bin/` to update Petstore sample so that CIs can verify the change. (For instance, only need to run `./bin/{LANG}-petstore.sh` and `./bin/security/{LANG}-petstore.sh` if updating the {LANG} (e.g. php, ruby, python, etc) code generator or {LANG} client's mustache templates). Windows batch files can be found in `.\bin\windows\`.
-- [ ] Filed the PR against the correct branch: Default: `master`.
+- [ ] Filed the PR against the [correct branch](https://github.com/OpenAPITools/openapi-generator/wiki/Git-Branches): `master`, `3.1.x`, `4.0.x`. Default: `master`.
 - [ ] Copied the [technical committee](https://github.com/openapitools/openapi-generator/#62---openapi-generator-technical-committee) to review the pull request if your PR is targeting a particular programming language.
 
 ### Description of the PR

.travis.yml

@@ -100,7 +100,7 @@ script:
   - mvn --quiet verify -Psamples
 after_success:
   # push to maven repo
-  - if [ $SONATYPE_USERNAME ] && [ -z $TRAVIS_TAG ] && [ "$TRAVIS_BRANCH" = "master" ] && [ "$TRAVIS_PULL_REQUEST" == "false" ]; then
+  - if [ $SONATYPE_USERNAME ] && [ -z $TRAVIS_TAG ] && ([ "$TRAVIS_BRANCH" = "master" ] || [ "$TRAVIS_BRANCH" = "3.1.x" ] || [ "$TRAVIS_BRANCH" = "4.0.x" ]) && [ "$TRAVIS_PULL_REQUEST" == "false" ]; then
       mvn clean deploy -DskipTests=true -B -U -P release --settings CI/settings.xml;
       echo "Finished mvn clean deploy for $TRAVIS_BRANCH";
       pushd .;

CONTRIBUTING.md

@@ -22,6 +22,10 @@ If you're new to git, you may find the following FAQs useful:
 
 https://github.com/openapitools/openapi-generator/wiki/FAQ#git
 
+### Branches
+
+Please file the pull request against the correct branch, e.g. `master` for non-breaking changes. See the [Git Branches](https://github.com/OpenAPITools/openapi-generator/wiki/Git-Branches) page for more information.
+
 ### Code generators
 
 All the code generators can be found in [modules/openapi-generator/src/main/java/org/openapitools/codegen/languages](https://github.com/openapitools/openapi-generator/tree/master/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages)

README.md

@@ -2,11 +2,20 @@
 
 <div align="center">
 
-Master (3.0.0): [![Build Status](https://img.shields.io/travis/OpenAPITools/openapi-generator/master.svg?label=Integration%20Test)](https://travis-ci.org/OpenAPITools/openapi-generator)
+[Master](https://github.com/OpenAPITools/openapi-generator/tree/master) (`3.0.2-SNAPSHOT`): [![Build Status](https://img.shields.io/travis/OpenAPITools/openapi-generator/master.svg?label=Integration%20Test)](https://travis-ci.org/OpenAPITools/openapi-generator)
 [![Integration Test2](https://circleci.com/gh/OpenAPITools/openapi-generator.svg?style=shield)](https://circleci.com/gh/OpenAPITools/openapi-generator)
 [![Run Status](https://api.shippable.com/projects/5af6bf74e790f4070084a115/badge?branch=master)](https://app.shippable.com/github/OpenAPITools/openapi-generator)
 [![Windows Test](https://ci.appveyor.com/api/projects/status/github/openapitools/openapi-generator?branch=master&svg=true&passingText=Windows%20Test%20-%20OK&failingText=Windows%20Test%20-%20Fails)](https://ci.appveyor.com/project/WilliamCheng/openapi-generator-wh2wu)
 
+[`3.1.x`](https://github.com/OpenAPITools/openapi-generator/tree/3.1.x) branch: [![Build Status](https://img.shields.io/travis/OpenAPITools/openapi-generator/3.1.x.svg?label=Integration%20Test)](https://travis-ci.org/OpenAPITools/openapi-generator)
+[![Integration Test2](https://circleci.com/gh/OpenAPITools/openapi-generator/tree/3.1.x.svg?style=shield)](https://circleci.com/gh/OpenAPITools/openapi-generator)
+[![Run Status](https://api.shippable.com/projects/5af6bf74e790f4070084a115/badge?branch=3.1.x)](https://app.shippable.com/github/OpenAPITools/openapi-generator)
+[![Windows Test](https://ci.appveyor.com/api/projects/status/github/openapitools/openapi-generator?branch=3.1.x&svg=true&passingText=Windows%20Test%20-%20OK&failingText=Windows%20Test%20-%20Fails)](https://ci.appveyor.com/project/WilliamCheng/openapi-generator-wh2wu)
+
+[`4.0.x`](https://github.com/OpenAPITools/openapi-generator/tree/4.0.x) branch: [![Build Status](https://img.shields.io/travis/OpenAPITools/openapi-generator/4.0.x.svg?label=Integration%20Test)](https://travis-ci.org/OpenAPITools/openapi-generator)
+[![Integration Test2](https://circleci.com/gh/OpenAPITools/openapi-generator/tree/4.0.x.svg?style=shield)](https://circleci.com/gh/OpenAPITools/openapi-generator)
+[![Run Status](https://api.shippable.com/projects/5af6bf74e790f4070084a115/badge?branch=4.0.x)](https://app.shippable.com/github/OpenAPITools/openapi-generator)
+[![Windows Test](https://ci.appveyor.com/api/projects/status/github/openapitools/openapi-generator?branch=4.0.x&svg=true&passingText=Windows%20Test%20-%20OK&failingText=Windows%20Test%20-%20Fails)](https://ci.appveyor.com/project/WilliamCheng/openapi-generator-wh2wu)
 </div>
 
 <div align="center">
@@ -74,8 +83,8 @@ The OpenAPI Specification has undergone 3 revisions since initial creation in 20
 
 OpenAPI Generator Version    | Release Date | OpenAPI Spec compatibility | Notes
 ---------------------------- | ------------ | -------------------------- | -----
-4.0.0 (upcoming major release) | TBD | 1.0, 1.1, 1.2, 2.0, 3.0 | Major release with breaking changes (no fallback)
-3.1.0 (upcoming minor release) | TBD | 1.0, 1.1, 1.2, 2.0, 3.0 | Minor release with breaking changes (with fallbacks)
+4.0.0 (upcoming major release) [SNAPSHOT](https://oss.sonatype.org/content/repositories/snapshots/org/openapitools/openapi-generator-cli/4.0.0-SNAPSHOT/)| TBD | 1.0, 1.1, 1.2, 2.0, 3.0 | Major release with breaking changes (no fallback)
+3.1.0 (upcoming minor release) [SNAPSHOT](https://oss.sonatype.org/content/repositories/snapshots/org/openapitools/openapi-generator-cli/3.1.0-SNAPSHOT/)| TBD | 1.0, 1.1, 1.2, 2.0, 3.0 | Minor release with breaking changes (with fallbacks)
 3.0.2 (current master, upcoming release) [SNAPSHOT](https://oss.sonatype.org/content/repositories/snapshots/org/openapitools/openapi-generator-cli/3.0.2-SNAPSHOT/)| TBD | 1.0, 1.1, 1.2, 
 3.0.1 | 11.06.2018 | 1.0, 1.1, 1.2, 2.0, 3.0   | Bugfix release
 3.0.0 | 01.06.2018 | 1.0, 1.1, 1.2, 2.0, 3.0   | First release with breaking changes
@@ -92,7 +101,7 @@ You can find our released artefacts on maven central:
     <version>${openapi-generator-version}</version>
 </dependency>
 ```
-* [openapi-generator](https://mvnrepository.com/artifact/org.openapitools/openapi-generator)
+See the different versions of the [openapi-generator](https://mvnrepository.com/artifact/org.openapitools/openapi-generator) artifact available on maven central.
 
 **Cli:**
 ```xml
@@ -102,7 +111,7 @@ You can find our released artefacts on maven central:
     <version>${openapi-generator-version}</version>
 </dependency>
 ```
-* [openapi-generator-cli](https://mvnrepository.com/artifact/org.openapitools/openapi-generator-cli)
+See the different versions of the [openapi-generator-cli](https://mvnrepository.com/artifact/org.openapitools/openapi-generator-cli) artifact available on maven central.
 
 **Maven plugin:**
 ```xml
@@ -112,7 +121,7 @@ You can find our released artefacts on maven central:
     <version>${openapi-generator-version}</version>
 </dependency>
 ```
-* [openapi-generator-maven-plugin](https://mvnrepository.com/artifact/org.openapitools/openapi-generator-maven-plugin)
+* See the different versions of the [openapi-generator-maven-plugin](https://mvnrepository.com/artifact/org.openapitools/openapi-generator-maven-plugin) artifact available on maven central.
 * [Readme](https://github.com/OpenAPITools/openapi-generator/blob/master/modules/openapi-generator-maven-plugin/README.adoc)
 
 **Gradle plugin:**
@@ -123,7 +132,7 @@ You can find our released artefacts on maven central:
     <version>${openapi-generator-version}</version>
 </dependency>
 ```
-* [openapi-generator-gradle-plugin](https://mvnrepository.com/artifact/org.openapitools/openapi-generator-gradle-plugin)
+* See the different versions of the [openapi-generator-gradle-plugin](https://mvnrepository.com/artifact/org.openapitools/openapi-generator-gradle-plugin) artifact available on maven central.
 * [Readme](https://github.com/OpenAPITools/openapi-generator/blob/master/modules/openapi-generator-gradle-plugin/README.adoc)
 
 ### [1.3 - Download JAR](#table-of-contents)
@@ -134,12 +143,12 @@ JAR location: `http://central.maven.org/maven2/org/openapitools/openapi-generato
 
 For **Mac/Linux** users:
 ```sh
-wget http://central.maven.org/maven2/org/openapitools/openapi-generator-cli/3.0.0/openapi-generator-cli-3.0.0.jar -O openapi-generator-cli.jar
+wget http://central.maven.org/maven2/org/openapitools/openapi-generator-cli/3.0.1/openapi-generator-cli-3.0.1.jar -O openapi-generator-cli.jar
 ```
 
 For **Windows** users, you will need to install [wget](http://gnuwin32.sourceforge.net/packages/wget.htm) or you can use Invoke-WebRequest in PowerShell (3.0+), e.g.
 ```
-Invoke-WebRequest -OutFile openapi-generator-cli.jar http://central.maven.org/maven2/org/openapitools/openapi-generator-cli/3.0.0/openapi-generator-cli-3.0.0.jar
+Invoke-WebRequest -OutFile openapi-generator-cli.jar http://central.maven.org/maven2/org/openapitools/openapi-generator-cli/3.0.1/openapi-generator-cli-3.0.1.jar
 ```
 
 After downloading the JAR, run `java -jar openapi-generator-cli.jar help` to show the usage.