Merge pull request #27 from chrismay2/feature/eclipse-project

Adjustments for feature branch for Eclipse IDE project
Fix submodule target repository for 'lib'.
Merge branch 'master' into feature/eclipse-project
Change submodule repository to HTTPS based URI.

Obviously HTTPS repo URIs cause less issues on fetching
the repository than Git repo URIs (firwalls/proxies).
Merge branch 'master' to reflect updated submodule URIs.
Update submodule pointer to include new Eclipse project & JARs.
Merge branch 'feature/eclipse-project'

Provide a basic IDE project definition for Eclipse.
Preferred (& maintained) IDE is still IntelliJ IDEA.
Add feature RoundedButtons