Edited readme.md
Merge pull request #8 from venkateshragi/cas-support-cql

Edited readme.md
Added MapWritableComparable.
Merge pull request #9 from venkateshragi/cas-support-cql

Added MapWritableComparable.
Added license text.
Modified readme file
Modified readme file
Merge pull request #10 from venkateshragi/cas-support-cql

Added license text.
Merge branch 'cas-support-cql', remote-tracking branch 'upstream/cas-support-cql' into cas-support-cql