Added jsonschema to setup.py install_requires
Added jsonschema to setup.py install_requires

iamrudra/elastalert,brianparry/elastalert,mash0304/elastalert,thomdixon/elastalert,ltagliamonte/elastalert,dvopsway/elastalert,jetyang2005/elastalert,amoennin/elastalert,Yelp/elastalert,gbenoit79/elastalert,rounds/elastalert,kkoppel/elastalert,rarescosma/elastalert,megancarney/elastalert,saltukalakus/elastalert,jetyang2005/elastalert,rprabhat/elastalert,AlphaStaxLLC/elastalert,lytics/elastalert,jetyang2005/elastalert,saltukalakus/elastalert