Added a very preliminary version of the SQL cache proposal for Blaze.
Added some use cases for the design document for SQL cache
Relabeled sections as per Mark suggestions
Added an implementation outline section as Mark suggested.
Using deferred arrays syntax now
Work on SQL column selection from table (record array)
Work on selecting columns from lazy SQL results
Work on blaze SQL notebook
Make sql example run
Fix name change
Merge branch 'master' of https://github.com/ContinuumIO/blaze into sql-cache
Added a complete example
New modifications based on discussions
Fix sql printers to be a bit saner
move sql samples from top level
Check for variable dimensions correctly.
Remove bad skipif statements and skip if there is no db.
minor fixes to sql example
hack in not allowing for selecting into sql_array as if it were a labeled array
Merge pull request #174 from aterrel/sqlindex

Fix sql printing and selection