docs: def index_create(self, index, number_of_shards=5,number_of_replicas=1):
          '''
          Creates the specified index
          > search = ElasticSearch()
          > search.index_create('twitter')
            {"ok":true,"acknowledged":true}
          '''
          request = self.session
          content = {'settings' : dict(number_of_shards=number_of_shards, number_of_replicas=number_of_replicas)}
          if self.verbose:
              print content
          url = 'http://%s:%s/%s' % (self.host, self.port, index)
          response = request.put(url,content)
          return response