Merge pull request #2 from KingOfPoptart/master

Able to handle ansible groups to push out comprehensive inventory files (Try 2)
Merge pull request #3 from KingOfPoptart/master

Update README.md with instructions for how the plugin works and what is expected.
Update README.md
Update README.md
Merge pull request #4 from KingOfPoptart/master

Adding support to read group config from file - Issue #4
merged the README.md conflict from the merge