add --imports option
fix default value for imports to None
typo fix
Merge remote-tracking branch 'upstream/master'
change to use JSON file with app definitions
fix merge problem
Do logging setup earlier so that messages during argument parsing are shown.

Also add a long style argument for enabling debug.
remove unneeded import sys
another merge fix
Merge pull request #80 from normanr/early-debug

Do logging setup earlier so that messages during argument parsing are shown.
fix merge conflict with upstream
with --debug, args.d is not defined anymore
Merge pull request #83 from wischnow/master

with --debug, args.d is not defined anymore
support multiple chrome paths

The official Chrome packages install into /opt/google/, so search those
too when trying to automatically locate one.

If we could not locate chrome at all, throw an error.  Otherwise, it'll
look like it worked but at runtime we'll get weird errors.