add version for vcsrepo dependency
Fix git-subtree's vcsrepo source
Install git-subtree documentation
Get source_dir from html_path
Merge pull request #22 from mcanevet/fix/sourcedir

Get source_dir from html_path
Merge pull request #21 from mcanevet/feature/install_gitsubtree_doc

Install git-subtree documentation
Merge pull request #20 from mcanevet/fix/git-subtree

Fix git-subtree's vcsrepo source
Merge pull request #9 from tdsparrow/master

add version for vcsrepo dependency