Add a new binary scheduler.py and setup all command-line arguments
Debugged all commands
Move bootstrap code to qds.py
Get rid of unnecessary copy of argparse
Dont support --running yet
Support for creating a scheduler
Test list_instances
Fix indentation
Remove spurious file name
Address review comments
Merge pull request #30 from vrajat/scheduler

Scheduler
Hotfix for supporting --cluster-label LABEL for hadoopcmd.

HadoopCommand class does manual parsing and is very brittle. Use with caution. A better CLI is in the works.
Error messages should go to sys.stderr
Return exit status
Warnings go to log, errors to std.err, output to stdout