Numeric overrides collide with ActiveSupport #18

Hi, not sure if you're still maintaining this package. I wanted to try using this in a Rails project, but ended up with some errors in other packages because of the time method overrides. The return values from seconds, minutes, etc. are different than those from the same methods in ActiveSupport.

Is there a way to disable the class extension by any chance since all of those methods are already provided by Rails?

Thank you