Added Gitter badge

Author: gitter-badger

README.md

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 angularQFileUpload
 ==================
 
+[![Gitter](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/icattlecoder/angularQFileUpload?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+
 AngularJS qiniu cloud storage large file upload service with support resumble,progress based on html5 file blob reader
 
 **Only woking under html5**