updated version file to 1.1.0 and added CHANGES file with reference

CHANGES

+For versions and changes, see:
+
+  About.qml

version.json

 {
- "version": "1.0.3",
- "message": "Version 1.0.3 of ISMARA client is now available - 08 April 2016<br> Download it from <a href='https://ismara.unibas.ch/ISMARA/client/'>https://ismara.unibas.ch/ISMARA/client/</a>"
+ "version": "1.1.0",
+ "message": "Version 1.1.0 of ISMARA client is now available - 08 July 2016<br> Download it from <a href='https://ismara.unibas.ch/ISMARA/client/'>https://ismara.unibas.ch/ISMARA/client/</a>"
 }