Issue 2: Add ability to skip execution of the plugin - added the configu...

...ration option to skip execution - added sample project

Fixed architecture for other modules

Main fix is the simple "return" in the execute part of the mojo if skip has been configured to true.  For the rest, added new sample to the native projects to test this.
Not 100% sure this is used by the NDK but yes, we do 3+ - SDK is on level 21 now :)