Included the missing links to the real time indexing
Merge remote-tracking branch 'origin/master' into real_time_indexing
Merge remote-tracking branch 'origin/master' into real_time_indexing
More sample data.
Minimal test for reverse relationship dependency tracking.
Slightly more comprehensive test.
Merge pull request #124 from ENCODE-DCC/real_time_indexing

Real time indexing
Make the hostname_command work when there is no ec2metadata.
Run bin/upgrade.