Modify the Numeric class for providing a series of methods that allow date units to be converted to seconds easily, like "2.weeks".

Methods
Public Class methods
time_alias( name )
    # File lib/datename.rb, line 51
51:   def Numeric.time_alias( name )
52:     class_eval "def \#{name}\nTime.\#{name}( self )\nend\n"
53:   end