Merge branch 'no_traceback_on_EPIPE' of https://github.com/msabramo/ansible-lint
Allow ansible-lint to accept multiple rules directories

Also some minor PEP8 fixes while in the area.
Add extra tag to TaskHasTag

Add a tags tag to TaskHasTag so it's easily skippable
without skipping productivity as a whole
Fixes to multiple rules directory + misc fixes

Allow multiple rules directories to work with a ~
(the first is taken care of by the shell)

Extra contribution information regarding PEP8

Minor PEP8 fixes to ansiblelint.utils.py
Merge branch 'master' of https://github.com/willthames/ansible-lint
Fixed breaking test resulting from removing __len__

Restored __len__ method to RulesCollection
Minor PEP8 tweaks