rxproject isn't designed for multi-module projects, this change should avoid the unncessary publish of the root project
Merge pull request #48 from ReactiveX/avoid-publishing-root

avoid the unncessary publish of the root project
Rename ‘library’ folder back to ‘rxandroid’
Pull module configuration into the root module

This prepares us to add submodules that share the same configuration as the main library module, as well as test dependencies etc.