Updated docs

doc/05-repositories.md

@@ -138,7 +138,9 @@ VCS repository provides `dist`s for them that fetch the packages as zips.
 * **GitHub:** [github.com](https://github.com) (Git)
 * **BitBucket:** [bitbucket.org](https://bitbucket.org) (Git and Mercurial)
 
-The VCS driver to be used is detected automatically based on the URL.
+The VCS driver to be used is detected automatically based on the URL. However,
+should you need to specify one for whatever reason, you can use `git`, `svn` or
+`hg` as the repository type instead of `vcs`.
 
 ### PEAR