added getUser()-methods and some more getter for User and Highscores
Merge branch 'master' of https://github.com/125m125/Game-Jolt-Java-Game-API into v1_1
fixed dataStore, added javadoc-comments
updateDataStore now returns null, when update failed
added a quick junit-tester to avoid overseeing the exception-messages in the output of the GJAPITester\n added method to reload apifile(mainly for testing)\n changed return of getServerTime to ServerTime
Merge pull request #5 from 125m125/master

some additions and fixes