wellington formula

Hi, I would like to add the [wellington](https://github.com/wellington/wellington) project to brew.  I'm new to building formulas, so any help would be great.  I noticed that go get ./... does not work well with brew.  I took tips from the other go projects to explicitly require all packages as go_resources, including the main repo which has 5 packages in it.

Questions:

* This formula is dependent on libsass which requires compiling c code, did I properly mark that requirement?
* I'd like to alias this project to `wt` which is the name of the cli tool, how is that done?
Looking at the makefile generated for libsass at this revision, it always passes `-std=c++0x`, and tries to pass `-stdlib=libc++` on Darwin. Looks like C++11 is required? Our build environment strips out the flag `-stdlib=libc++` flag unless specifically requested, which is why Mt. Lion is having the issue it is. (That's what the suggested C++11 changes would fix.)