Using gitter for communication

Author: srinipunuru

README.md

@@ -45,10 +45,6 @@ Databus currently needs gradle version 1.0 or above to build. The commands to bu
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 Databus will be licensed under Apache 2.0 license.
 
-# Mailing List
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-Please join our mailing list at databus-linkedin@googlegroups.com
-
 # Full Documentation
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 See our [wiki](https://github.com/linkedin/databus/wiki) for full documentation and examples.