Parser for versions strings such as "1.2.3".
Usage:
require 'versionify'
V = Versionify::VersionSpec
puts ( "1.0.10" > "1.0.2" ) # => false
puts (V.new("1.0.10") > V.new("1.0.2")) # => true
Author: Philipp Kempgen, http://kempgen.net