* Enable installing collections from git repositories
* Add tests for installing individual and multiple collections from git repositories
* Test to make sure recursive dependencies with different syntax are deduplicated
* Add documentation
* add a changelog
* Skip Python 2.6
* Only fail if no collections are located in a git repository
Add support for a 'type' key for collections in requirement.yml files.
Update the changelog and document the supported keys and allowed values for the type.
Add a note that the collection(s) in the repo must contain a galaxy.yml
* Add a warning about embedding credentials in SCM URLs
* Update with review suggestions
* suppress sanity compile failure for Python 2.6
* Unify ansible-galaxy install -r
* Minor nit fixes for docs
* Re-align warnings
* Fix up integration test
* Fix up test where no roles/collections were in file
Use "name" when possible rather than "src" to make the examples
of roles and collections in a single requirements files more
coherenant. Fundamentally, roles and collections are completely different.
But we can make the requiremets file easier to read by unifying the
format as much as possible.
##### SUMMARY
Previously folder tree example for collection adjacent to the current playbook were displaying a subfolder below the playbook instead of being a sibling.
