CB-6794 Add license for CONTRIBUTING.md
CB-6877 Updated version and RELEASENOTES.md for release 0.2.9
CB-6877 Incremented plugin version.
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/cordova-plugin-battery-status
Merge branch 'master' of ssh://github.com/ldeluca/cordova-plugin-battery-status into CB-6773cordova-plugin-battery-status