CB-6801 Add license
CB-6877 Updated version and RELEASENOTES.md for release 0.2.8
CB-6877 Incremented plugin version.
Add comment about other implementation.
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/cordova-plugin-dialogs
Merge branch 'master' of ssh://github.com/ldeluca/cordova-plugin-dialogs into CB-6773cordova-plugin-dialogs