Revert "Removed support for Permissions2/3." Reason: http://pastebin.com/jTZEJVxJ

This reverts commit efb7b3509a.

src/main/java/com/sk89q/wepif/PermissionsResolverManager.java

@@ -86,6 +86,7 @@ public class PermissionsResolverManager implements PermissionsResolver {
     protected Class<? extends PermissionsResolver>[] availableResolvers = new Class[] {
             PluginPermissionsResolver.class,
             PermissionsExResolver.class,
+            NijiPermissionsResolver.class,
             DinnerPermsResolver.class,
             FlatFilePermissionsResolver.class
     };