Interation methods #each, #map_each and more are

implemented and working. Also restructured files
again.

lib/time_ext.rb

@@ -1,3 +1,13 @@
 require 'rubygems'
 require 'active_support'
-require 'time_ext/time'
+require 'time_ext/method_chain'
+require 'time_ext/core_ext/time/calculations'
+require 'time_ext/core_ext/time/iterations'
+
+module TimeExt
+  
+  module Base
+    TIME_EXT_UNITS = [:year, :month, :day, :hour, :min, :sec, :usec]
+  end
+  
+end