Renaming Server and Resource to AuthServer and ResourceServer to be less confusing.

src/OAuth2/AuthServer.php

@@ -2,7 +2,7 @@
 
 namespace OAuth2;
 
-class Server
+class AuthServer
 {
     protected $scopeDelimeter = ',';
 

src/OAuth2/ResourceServer.php

@@ -6,7 +6,7 @@ use OutOfBoundsException;
 use OAuth2\Storage\SessionInterface;
 use OAuth2\Storage\SessionScopeInterface;
 
-class Resource
+class ResourceServer
 {
     protected $accessToken = null;