add ubuntu platform
CB-5188:
Merge branch 'master' of github.com:Zaspire/cordova-plugin-console into dev
[CB-5565] Updated version and RELEASENOTES.md for release 0.2.5
[CB-5565] Incremented plugin version on dev branch.
CB-5658 Add doc/index.md for Console plugin
CB-5658 Update license comment formatting of doc/index.md
CB-5719 Updated version and RELEASENOTES.md for release 0.2.6