Add install instructions

README.md

@@ -8,6 +8,21 @@ A simple PHP framework providing utilities for
 ## Usage
 This framework is most easily integrated into an environment using the PSR-4 naming standard with class auto-loading.
 
+Add this repo to the `repositories` section of your `composer.json`.
+```json
+"repositories": [
+   {
+     "type": "vcs",
+     "url": "https://github.com/peacefulcraft-network/api-router"
+   }
+ ]
+ ```
+
+ Install the library
+ ```
+ composer require pcn/api-router
+ ```
+
 ### Routing
 ```php
 ob_start();
@@ -69,4 +84,4 @@ The $Response->setData() call can be used to set what data is sent back by the a
 
 Alternativly, $Response->setResponseTypeRaw(true); will disable all framework output and a response can be crafted using standard PHP echo / print calls. Appropriate headers may need to be set for 'Content-Type' by hand. Technically anything can be 'echo'ed at anytime, regardless of setResponseTypeRaw(), but this output will also contain the framework output. Generally this is only useful for 'echo'ing out debug information and in production you'll just want to use the Router with your own templating system, or utilize the built in setData() method.
 */
-```
+```