Rewrote "basics.rst"
Deleted examples

These were merged back into the basics section.
Updated Driver examples to fit new API
Removed Installation portion from Integration

This is in the overview now.
Renamed "Classes" to "API" and made it current
Updated Item API document
Shuffled functions around
Added DriverList section
Moved precompute to top now that it's the default
FAQ placeholder
Added initial Grouping page
Reordered index, tweaked api wording
Reformatting and tweaking headers
Built out Extending and Integration Pages
Added "purge" notes to Integration page
Moved new driver creation to it's own page
Reworked Invalidation section.
Fleshed out FAQ with initial questions
Merge pull request #12 from tedivm/content_updates

v0.12 Content Updates