(WIP) light design v3

This PR adds on to the work done in #13. (I will close #13 when we're happy with things.)

First off, apologies for the delay.

This design sports a more politically correct logo, new colours, inclusion of Benchmark results table and "improved" styling, and tweaks to the FAQ section.

## screenshots
![screenshot 2014-10-22 04 54 14](https://cloud.githubusercontent.com/assets/203725/4735612/418d6540-59e2-11e4-89c3-a4fcca0dbbf8.png)
![screenshot 2014-10-22 04 54 45](https://cloud.githubusercontent.com/assets/203725/4735641/b743697e-59e2-11e4-97b1-645e00469640.png)
![screenshot 2014-10-22 05 00 02](https://cloud.githubusercontent.com/assets/203725/4735656/fcc4d014-59e2-11e4-9665-ddb3aba86116.png)
![screenshot 2014-10-22 04 54 56](https://cloud.githubusercontent.com/assets/203725/4735642/b744578a-59e2-11e4-98ca-c2ca41ae6ff8.png)

## what's left?
* Not pleased with the "Run the benchmarks now" section. Will try a few more colour/style treatments.
* Colours are a tad too blue, especially in the Benchmark results table. (And the yellow for "running…" I'm not super :smiley: with.)
* The FAQ :question: copy :copy: is a lot to read :book:. I didn't try trimming the text yet, but I've toyed :car:  with two/three columns, but things became too crowded to read.
* Resources section can use some better styling. This was my own addition; I think it's worth linking to relevant libraries and documentation. But I do think maybe the links don't need a separate section; perhaps the links might be better served as links in a footer.