added an importer.py

for importing bookmarks n stuff

currently supports chromium bookmarks

usage:
in chromium: export your bookmarks to html file (bookmark manager)
./importer.py chromium bookmarks_10_11_14.html >> ~/.config/qutebrowser/quickmarks
fixed a typo
Merge branch 'master' of https://github.com/claudehohl/qutebrowser into claudehohl-master
importer: Use choices=... for argparse
importer: Whitespace cleanup
importer: Use built-in open
importer: Import cleanup
importer: Clean up string formatting
importer: Add docstrings.
importer: Fix printing of usage
importer: Add module docstring
importer: Add help message about Chromium
Merge branch 'claudehohl-master' (bookmarks importer)