Add `options.noCache`

[ehmicky]

This option removes the effect of remoteCache.

I need it because I run sway (which is based on this module) in a Gulp task in watch mode, and caching is problematic in such a case.

All tests pass, however I haven't written any test for this new feature. I looked at the unit tests and it is quite big to grasp at once. I wondered if you would be kind enough to help with the unit tests for this feature? Thanks!

[whitlockjc]

This is a great idea. I'll get on the review and see if I can figure out how to write a test ensuring that it's working.