Release/flocker 0.3.0dev1

Fixes #879 
It was (albeit apparently by mistake) an entry in the 0.2 what's new which we've just moved up, so I think this is OK to leave in, not depending on geard is a significant feature because it means flocker-node doesn't have to run in an environment with geard installed. and geard doesn't run on all Linux systems. (the mistake was that it shouldn't have been listed as a 0.2 feature)