Added build status image

Author: Narine C

README.md

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 # Contextual Sync 
 
+[![Build Status - Master](https://travis-ci.org/csync/csync-java.svg?branch=master)](https://travis-ci.org/csync/csync-java)
+[![License][license-svg]][license-link] 
+
+[license-svg]: https://img.shields.io/hexpm/l/plug.svg
+[license-link]: https://github.com/csync/csync-server/blob/master/LICENSE
+
 Contextual Sync (CSync) is an open source, real-time, continuous data synchronization service for building modern applications. The CSync data store is organized with key/values where keys have a hierarchical structure. Clients can obtain the current value for a key and any subsequent updates by listening on the key. Updates are delivered to all online clients in near-real time. Clients can also listen on a key pattern where some components contain wildcards. 
 
 ## Keys