Generate plugin list in a new pane, and hit a key on item in list to triggger an update.

[evanthegrayt]

I'm dreaming big here, but I want add a way to get a list of plugins, and open the list in a new active pane (similar to NERDTree, etc.). Once the new window is open, it should be separated into git and non-git sections. Hitting a trigger (like return or maybe U) will update the plugin.

I thought about changing the :UpdateSinglePlugin command to do this, but I think it'd be a better functionality of the :ListAllPlugins feature.