Adding argparse to the list of requirements

Argparse is provided in the stdlib in python 2.7+, but not in  2.6.
Since lucid still works on 2.6 it makes sense to add this to the
requirements list and also the control file.
Merge pull request #27 from thekad/master

Adding argparse to the list of requirements
Merge remote-tracking branch 'upstream/master'

* upstream/master:
  Adding argparse to the list of requirements
Cleanup for log lvl and terms used