Added documentation for commands.
Added documentation for commands.

martiis/ElasticsearchBundle,abhiesa-tolexo/ElasticsearchBundle,ndinh215/ONGRElasticsearchBundle,abhiesa-tolexo/ElasticsearchBundle,asev/ElasticsearchBundle,saimaz/ElasticsearchBundle,murnieza/ElasticsearchBundle,lmikelionis/ElasticsearchBundle,saimaz/ElasticsearchBundle,GrandLTU/ElasticsearchBundle,trandangtri/ElasticsearchBundle,murnieza/ElasticsearchBundle,GrandLTU/ElasticsearchBundle,ongr-io/ElasticsearchBundle,trandangtri/ElasticsearchBundle,tautrimas/ElasticsearchBundle,tautrimas/ElasticsearchBundle,martiis/ElasticsearchBundle,ndinh215/ONGRElasticsearchBundle,asev/ElasticsearchBundle