README.tmpl in main-2.1.0 vs README.tmpl in main-2.2.0

@@ -184,9 +184,29 @@
   vim -o lib/main.rb lib/main/*
 
   API section below
 
 HISTORY
+  2.2.0
+    - added ability for parameter dsl error handlers to accept an argument,
+      this will be passed the current error.  for example
+
+        argument(:x) do
+          arity 42
+        
+          error do |e|
+            case e
+              when Parameter::Arity
+            ...
+          end
+        end  
+
+    - refined the mode parsing a bit: modes can now be abbreviated to uniqness
+      and, when the mode is ambiuous, a nice error message is printed, for
+      example:
+
+        ambiguous mode: in = (inflate or install)?
+
   2.1.0
     - added custom error handling dsl for parameters, this includes the ability
       to prepend, append, or replace the standard error handlers:
 
         require 'main'