Merge pull request #1 from AnthonyDiGirolamo/master

update to new version
Added possibility to use a configuration file to specify the location of the todo.txt file
Merge pull request #10 from fdlm/master

Added configuration file
load correct version of configparser for python2/3, switched to docopt for command line parsing
Merge branch 'master' into urwid

Conflicts:
  setup.py
  todotxt_machine/cli.py