src/platforms.js: Adding tizen.
README.md: Adding Tizen to list of supported platforms
Adding spec for Tizen platform
Merge branch 'tizen' of https://github.com/gabrielschulhof/cordova-plugman

Conflicts:
	README.md
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/cordova-plugman