title: case insensitive search in elasticsearch
body: <p>I have tried making an entry in the elasticsearch.yml file to create the custom analyser for the same as mentioned in the gist: <a href="https://gist.github.com/1403902" rel="nofollow">https://gist.github.com/1403902</a></p>
  
  <p>but i am getting following error <code>
  {"error":"RemoteTransportException[[Banner, Robert Bruce][inet[/192.168.1.15:9300]][indices/create]]; nested: MapperParsingException[mapping [type1]]; nested: MapperParsingException[Analyzer [string_lowercase] not found for field [field1]];
  </code></p>
  
  <p>I am still not able to figure out how to do this. I have searched stackoverflow for the same and  got similar replies (as mentioned in the gist mentioned above)</p>
  
  <p>please provide me an example, that i can test.</p>