Merge pull request #8 from rainforestapp/master

Add support for deleting units
Fix deprecated RDoc::Task, bump version to 0.7.0
Remove references to Dolores Labs
replaces README with more verbose version, aimed at documenting what the gem really does
readme updates
minor changes to readme
more readme updates
more readme updates
removes my api key
adds worker section and api documentation links
format changes to usage and examples section
fixes format error
adds example job link
fixes example job link
adds sign in note to example job link
adds some edits to worker class
copy edits and formatting fixes
legend edits
fixes copyedits from emma
worker.ban and worker.deban from emma's notes