I was watching Yehuda Katz's latest talk at RailsConf 2012 (which is great by the way), and I realized he was using a native file browser in MacVim which looked pretty awesome (I don't really like NERDTree).
So I was pretty happy when my friend Yannick pointed me to the project, but I didn't want to compile it by hand. I've really gotten used to brew and, I'll admit, a little lazy. I like when stuff just updates itself, because I would never update it otherwise. Which is why I made the macvim-split-browser brew formula.
Unfortunately it was getting too specific for brew, so I had to make a tap to host it. Here's the link with installation instructions: https://github.com/joelcogen/homebrew-macvimsplitbrowser