Handle no cubes,dimensions,facts being present.

Print Runtime + number of rows processed after printing query results.
Merge pull request #19 from sreekanth-r/db-storage

Handle Cases where No Cubes are present
Set user in hivedriver from sessionstate
Merge branch 'develop' of https://github.com/InMobi/grill into develop
Fix temp table creation
Remove unnecessary changes from Cube driver
Merge pull request #20 from InMobi/temp-tables

Fix temp table creation
Fix test failure in jenkins
Fix test failure in jenkins
Document on how to use " character in grill queries within the grill-cli.
Merge pull request #21 from sreekanth-r/db-storage

Add documentation on how to skip " in grill cli
Set classpath properly
Merge branch 'develop' of https://github.com/InMobi/grill into develop
Explain to be called on rewritten query
Add more logging to rewriting
Enable columnar rewriter changes
Add more debug logging in RewriteUtil