Menlo for Powerline

It seems that the old patched [Menlo font](https://github.com/Lokaltog/vim-powerline/wiki/Patched-fonts) doesn't work (due to some glyph changes?), I re-patched it using the new fontpatcher.

Steps to patch the font

	cp /System/Library/Fonts/Menlo.ttc .
	fontforge -script ./fontpatcher.py Menlo.ttc

I got the following messages

	Copyright (c) 2000-2012 by George Williams.
	 Executable based on sources from 14:57 GMT 31-Jul-2012-D.
	 Library based on sources from 14:57 GMT 31-Jul-2012.
	The following table(s) in the font have been ignored by FontForge
	  Ignoring 'hdmx' horizontal device metrics table
	The glyph named mu is mapped to U+00B5.
	  But its name indicates it should be mapped to U+03BC.
	The glyph named Delta is mapped to U+2206.
	  But its name indicates it should be mapped to U+0394.

Copy the font to the system fonts directory as all users should have access

	cp Menlo\ Regular\ for\ Powerline.otf /Library/Fonts/

PS
I found that fontpatcher wasn't available in `/Library/Python/2.7/site-packages/powerline/` after I installed powerline via `pip`.

![powerline-normal](https://f.cloud.github.com/assets/52898/65508/e9e2747a-5e7f-11e2-8f58-868f7ed9d7d7.png)
![powerline](https://f.cloud.github.com/assets/52898/65494/0da9ebfa-5e7f-11e2-868b-344b81953a3e.png)