Added syntax highlighting

README.md

@@ -14,25 +14,29 @@ Download the PHP library from Github, and require in your script like so:
 ### Creating Request
 So you're probably wondering how using Unicorn makes creating requests in PHP easier, let's look at a working example:
 
+```php
 $response = Unicorn::post("http://httpbin.org/post", array( "Accept" => "application/json" ),
   array(
     "parameter" => 23,
     "foo" => "bar"
   )
 );
+```
 
 ### File Uploads
 To upload files in a multipart form representation simply place an @ symbol before the path:
 
+```php
 $response = Unicorn::post("http://httpbin.org/post", array( "Accept" => "application/json" ),
   array(
     "file" => "@/tmp/file.txt"
   )
 );
+ ```
  
 ### Custom Entity Body
 Sending a custom body such as a JSON Object rather than a string or form style parameters we utilize json_encode for the body:
-
+```php
 $response = Unicorn::post("http://httpbin.org/post", array( "Accept" => "application/json" ),
   json_encode(
     array(
@@ -41,13 +45,16 @@ Sending a custom body such as a JSON Object rather than a string or form style p
     )
   )
 );
+```
 
 ### Request Reference
+```php
 Unicorn::get($url, $headers = array());
 Unicorn::post($url, $headers = array(), $body = NULL);
 Unicorn::put($url, $headers = array(), $body = NULL);
 Unicorn::patch($url, $headers = array(), $body = NULL);
 Unicorn::delete($url, $headers = array());
+```
   
 `url`
 Endpoint, address, or uri to be acted upon and requested information from.