Add advanced query example to README
Add advanced query example to README

alekitto/FazlandElasticaBundle,ramuss/FazlandElasticaBundle,peterkokot/FOSElasticaBundle,Exercise/FOQElasticaBundle,fazland/FazlandElasticaBundle,fazland/FazlandElasticaBundle,ramuss/FazlandElasticaBundle,alekitto/FazlandElasticaBundle