fixes bug 1118813 - Script to set up entire development environment

[peterbe]

No description provided.

[coveralls]

Coverage remained the same when pulling 4d3ceb8 on peterbe:bug-1118813-script-to-set-up-entire-development-environment into e2b43a9 on mozilla:master.

[msoedov]

Hi, I tried set-up environment using ./devup.py and got this traceback

Now you should have a virtualenv and all things installed.

    The next thing to do is to run the first migrations. Go into the
    project:

        cd /home/msoedov/repos/airmozilla

Activate your virtualenv. E.g.:

    source /home/msoedov/pyenvs/amoz/bin/activate

Traceback (most recent call last):
  File "devup.py", line 439, in <module>
    sys.exit(run())
  File "devup.py", line 430, in run
    about_first_migration(repo_root, venv_path)
  File "devup.py", line 403, in about_first_migration
    """ % repo_root
TypeError: not all arguments converted during string formatting

[peterbe]

I'm on it
https://bugzilla.mozilla.org/show_bug.cgi?id=1119940

Thank you for testing. It'd be awesome to see you in #airmozilla-dev on irc.mozilla.org