Changed structure to accomodate std input.
removed dependency on math, re
Added description to test script
Changed urllib to urllib2
Prettying source code
Expanded to 10**10
Changed simple test case filenames
Added more testing cases
Nicer parsing of file list
whitespace and variable naming
Better error messages and no graphs if there is no data
Merge pull request #1 from wltrimbl/bailout

Some more testing, some more error handling
Merge pull request #7 from wltrimbl/master

Stability patches