Tweak: updating ruby gems

Recently was helping my friend to setup a twitter based application on server.  And gems needed to be updated as ruby gem "twitter" needs rubygems of  >=1.2.0

  And as usual passed the update query and after a few minutes there is an interesting message saying "nothing to update". 

  There seems to be a minor tweak to achieve this.  A two step tweak which needs another gem installed and then update.

1. gem install rubygems-update
2. update_rubygems

and that does the trick ;)