Move Wiki Index into Git
This has a few benefits, but mainly helps us reduce the number of places in which things have to be changed. This could be moved to being a data.yml or some such, but its a step in the right direction right now.
This file will be included on the website too, which looks awesome.
Every section now fits MWOP and his massive name.
Merge pull request #369 from php-fig/psr-index

Move Wiki Index into Git