Simplified comparison and made function calls a little more intuitive. Removed twiddle in favor of doing multiple standard operators to reduce complexity. Added ability to compare against version strings
Implemented isNumeric and string length checks to ensure that version numbers with a mismatched number of digits are compared properly
Updated readme
Optimize vcomp() function by pre-calculating string length and whether or not values should be compared numerically.
Add test for isNumeric when alphas are present
Don't return early on equivalency since this is our recursion case.
Merge pull request #1 from ryanuber/comparison

enhancement: comparison optimization