Monodevelop now offers the MonoGame Project addin directly on their site[1] and in their addin manager. The package monodevelop-monogame-addin-git[2] is therefore useless.
[1] http://addins.monodevelop.com/Project/Index/47 [2] https://aur.archlinux.org/packages/monodevelop-monogame-addin-git/
