README in rvm-0.0.97 vs README in rvm-0.0.98

- old
+ new

@@ -33,9 +33,10 @@
 
   * ruby    - MRI/YARV Ruby (The Standard), defaults to 1.8.6
   jruby     - JRuby
   rbx       - rubinius
   ree       - ruby Enterprise Edition
+  ironruby  - IronRuby
   mput      - shyouhei(mput)'s github repository
   system    - use the system ruby (eg. pre-rvm state)
   default   - use rvm set default ruby and system if it hasn't been set.
 
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