Adds a random-forest option to generate dependent jobs. Also creates an init package for texttable so the module loads.

Signed-off-by: Matt Redmond <matt.redmond@airbnb.com>
Force jobs in randomforest mode to be scheduled if they have no parents.
Count number of available parents before creating dependent jobs.
Merge pull request #3 from mrdmnd/master

Add a randomforest option to create many dependent jobs.