Setup Travis, add build script, init contributing docs (#45)

* Add Travis

* Add yarn.lock

* Temporarily disable Node 6 in Travis

* Add contributing docs

* Add build script

.gitignore

@@ -1,6 +1,5 @@
 node_modules/
 .DS_Store
-yarn.lock
 package-lock.json
 test/dist
 test/input

.travis.yml

@@ -0,0 +1,8 @@
+language: node_js
+node_js:
+  # TODO: Run Babel on tests so that async-await works in Node 6
+  # - '6'
+  - '8'
+cache: yarn
+script: yarn test
+sudo: false

CONTRIBUTING.md

@@ -0,0 +1,36 @@
+# Contributing
+
+## Overview
+
+* `yarn install` - install all dependencies
+* `yarn build` - run src/ through [babel] into lib/
+* `yarn test` - run all tests in repo
+* `yarn format` - run [prettier] on all files
+
+## Getting Started
+
+To get started with the project:
+
+You'll need [Git], [Node], and [Yarn] installed. Then clone the repository:
+
+```js
+git clone git@github.com:parcel-bundler/parcel.git && cd parcel
+```
+
+Run Yarn:
+
+```js
+yarn install
+```
+
+Run tests:
+
+```js
+yarn test
+```
+
+[babel]: http://babeljs.io/
+[prettier]: https://prettier.io/
+[git]: https://git-scm.com/
+[node]: https://nodejs.org/
+[yarn]: https://yarnpkg.com/

package.json

@@ -54,7 +54,8 @@
   },
   "scripts": {
     "test": "cross-env NODE_ENV=test mocha",
-    "prepublish": "babel src -d lib"
+    "build": "babel src -d lib",
+    "prepublish": "yarn build"
   },
   "bin": {
     "parcel": "bin/cli.js"