Add rubies and ruby_command_prefix class methods
Various cleanup and enhancement changes
Add extra description of rubies handling
Fix rvm handling
Work on travis errors
Split tests, cleaned up modules, plus some extra tests and work in progress for rvm
Some extra refactoring of tests, cleanup and misc fixes
More work
Comment out the #rubies method and associated tests (it needs more thought and reworking)
Hopefully this will get jruby working
Fix url used for testing
sqlite3-ruby gem for rbx
fix the url for the 2nd time (UGH!)
Change rubinus sqlite3 gem to what travis recommends and mark rbx as allowed-failure
Merge branch 'ruby_versions'