CB-5188:
1. Added amazon-fireos platform.
2. Change to use amazon-fireos as a platform if user agent string contains 'cordova-amazon-fireos'.
added ubuntu support
[CB-5565] Updated version and RELEASENOTES.md for release 0.3.3
[CB-5565] Incremented plugin version on dev branch.
CB-5658 Delete stale snapshot of plugin docs
CB-5658 Add doc.index.md for Compass plugin
CB-5658 Update license comment formatting of doc/index.md
CB-5719 Updated version and RELEASENOTES.md for release 0.3.4