Merge pull request #803 from xt0rted/angular.$log

Angular JS: adding debug() to the log service

angularjs/angular.d.ts

@@ -305,6 +305,7 @@ declare module ng {
     // see http://docs.angularjs.org/api/ng.$log
     ///////////////////////////////////////////////////////////////////////////
     interface ILogService {
+        debug: ILogCall;
         error: ILogCall;
         info: ILogCall;
         log: ILogCall;