First cut at docs
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More docs
Begin drivers abstraction.
Working on the ability to query for a range.
WIP
Some more WIP

Convert unit tests to use gocheck.
Work on driver interface to allow configuration of envs.
Sql driver basically works
sql driver == sqlite3 driver now
Add TestMultiIndex

Also fix multi-index issue uncovered in "mem" driver.
Add TestUpdates

Fixing issue found in "mem" driver
Add TestLimit

Cleanup tests
Fix limit bug found in "sql" driver
Rename .run() to .query()
Add TestDelete

Impl "sql" driver Delete
Add TestMVCC

Lots of cleanup.
Add query plan test to sql driver.
Ensure that all query plans avoid table scans.
Reorder sql transaction for PUT operations
If an update fails, this reorder will cause less work for a rollback.
Getting main tests to pass again
Cleanup packages, rearrange
Prepare to improve query api
Adding query support in client along with test