[RFC] Merge Neovim.org & Dev Wiki

Here's what I have so far based on what was discussed in #47. I put the Donation section on the homepage, changed up the navigation, added the Polls section to the homepage, and moved the Style Guide to be located at `/develop/style-guide.xml`.

I've been trying to test out [jekyll-redirect-from](https://github.com/jekyll/jekyll-redirect-from) which is a plugin that we can use with GitHub Pages to do redirects but can't seem to get it to work locally. I'm going to continue to try to see if I can get it to work.

I don't know if there is any advantage to having the style-guide in XML. I think it might be better to have it as HTML and convert it to using the same colors as the website styling.

Anyways, I'll put the screenshots below (shrunken massively). Let me know what you think.

![screen shot 2014-06-11 at 9 35 50 pm](https://cloud.githubusercontent.com/assets/157801/3253533/df53e940-f1da-11e3-906b-af6c5ccca80b.png)
![screen shot 2014-06-11 at 9 35 59 pm](https://cloud.githubusercontent.com/assets/157801/3253532/df532636-f1da-11e3-93f8-a078fb826de0.png)