Fix double end block ```
Remove dependency on xamarin test cloud gem - this will go into calabash gem
move comment to avoid yard adding it to Calabash module
Remove constant which hasn't been used for ages
Use markdown with redcarpet
Document WaitHelpers
yard opts should be in .yardopts
yard README should have examples of doc'ing private APIs
private docs should be marked @private
WHITESPACE CHANGES
Merge pull request #401 from calabash/feature/update-yard-readme-with-visibility-examples

Feature/update yard readme with visibility examples
write up docs and visibility modifiers on the Core module
Moved operations in Operations into Core for the purpose of more readable documentation
Fixup accidental push of stash merge
should not use rdoc '+' around params
Add docs for test helpers
Document FailureHelpers
sentences should be cap'ed and end with a .
should remove errant # and {}
should use markdown style in wait_tap docs