Add moonscript-vim plugin for highlighting MoonScript
Set gdefault and update related mappings, and reorganize

Reorganized mappings and TODOs

I updated gdefault-related mappings by having them not type ‘g’ and also press <left> one fewer time

I deleted one TODO that had already been done
Add more TODOs (n_<tab>, space leader, Steve Losh blog)
Add <Leader>ne mapping to toggle NERDTree

This is a stopgap on the way to actually fixing NERDTree. I want to make NERDTree “secondary” trees stay open after I open the first file from it. This will make it easier to manually reopen NERDTree in that case.
Change mapleader to space

On the advice of http://sheerun.net/2014/03/21/how-to-boost-your-vim-productivity/
Add TODO to set scrolloff high when browsing search results
Add comment in indentation sectio referring to autocommands section