rename command line option
fix documentation to match the new command line syntax
Merge pull request #7 from rahulsundaram/fix-command-line

Fix command line, replacing -s with -d option. Though the patch is actually broken, but I will fix it after commit. Thank you @rahulsundaram.
Fixing the argparse issue from last pull request.
Adds -v or --version argument for printing the tool version.
Adds the MAN page to the project.
more documentation fixes
grammar fix
Merge pull request #8 from rahulsundaram/fix-command-line

more documentation fixes
Updates README to latest command line arguments.
Fixes typo in setup.py
Fixes typo in setup.py