Missing --version - V command

[EmanuelFaria]

Although I see docanalysis' version as it's being installed, there seems to be no version check listed in docanalysis' help, and I've tried every other way I can think of.

Side note: in the docanalysis README.md, is there a way we can hyperlink the current version number from it's information page (assuming we build one like the one for py4ami) so that when the version number at the top of the page changes, it's automatically reflected in the README file? (The version in the current readme is old. This would give us one less thing to remember when taking updates live.)