various cleanups

- added Scrutinizer
- added EditorConfig
- removed closing php tags
- proper usage of require_once
- cleaned extra spacing

lib/Unirest/HttpMethod.php

@@ -4,11 +4,9 @@ namespace Unirest;
 
 interface HttpMethod
 {
-    
-    const DELETE = "DELETE";
-    const GET = "GET";
-    const POST = "POST";
-    const PUT = "PUT";
-    const PATCH = "PATCH";
-    
-}
+    const DELETE = 'DELETE';
+    const GET = 'GET';
+    const PATCH = 'PATCH';
+    const POST = 'POST';
+    const PUT = 'PUT';
+}