fixed NPE issue getCollectionItems API
Merge remote-tracking branch 'gooru/master'
Merge remote-tracking branch 'gooru/master'
Merge remote-tracking branch 'gooru/master'
Merge remote-tracking branch 'gooru/master'
Merge remote-tracking branch 'gooru/master'
Merge remote-tracking branch 'gooru/master'
Merge remote-tracking branch 'gooru/master'
Merge remote-tracking branch 'gooru/master'
Added fix in user authenticate API
Merge pull request #422 from skpcharles/master

fixed NPE issue getCollectionItems API