dealing with dependencies on other repos

[cjayb]

This may be a way to link other repos to nemolab, without changing the git clone-approach for normal users:
http://blogs.atlassian.com/2013/05/alternatives-to-git-submodule-git-subtree/

Should be tested @MadsJensen @sarangnemo

[cjayb]

And this one
https://medium.com/@porteneuve/mastering-git-subtrees-943d29a798ec#.1gnargyht