Removed the installation instructions for my package

Author: GrahamCampbell

README.markdown

@@ -47,14 +47,6 @@ Now we can use autoloader from Composer by:
 
 [Laravel GitHub](https://github.com/GrahamCampbell/Laravel-GitHub) by [Graham Campbell](https://github.com/GrahamCampbell) might interest you.
 
-```json
-{
-    "require": {
-        "graham-campbell/github": "0.1.*"
-    }
-}
-```
-
 ## Basic usage of `php-github-api` client
 
 ```php