Merge pull request #12 from tomjakubowski/master

Add support for primitive types
Fixed DashDocSetFamily value
Added TOC references generator
Merge pull request #14 from farcaller/master

Added TOC references generator
Use sqlite3 gem, wrap inserts in transaction

On master, `time rake docset:reindex` -- real    5m27.159s

On this branch, `time rake docset:reindex` -- real    0m1.661s
Add link in to my Dash feed with nightly builds

This feed is updated daily with a docset built from the latest Rust nightly.
Merge pull request #16 from tomjakubowski/patch-1

Add link in to my Dash feed with nightly builds
Merge pull request #15 from tomjakubowski/ruby-sqlite3

Use sqlite3 gem, wrap inserts in transaction