README.md in activemodel-associations-0.1.1 vs README.md in activemodel-associations-0.1.2

@@ -18,9 +18,12 @@
 
 Or install it yourself as:
 
     $ gem install activemodel-associations
 
+## Requirements
+- Ruby-2.0.0 or later
+
 ## Support
 - activerecord-4.0.x
 - activerecord-4.1.x
 - activerecord-4.2.x