backing out Elasticsearch 2.0 because it will require 2.0 to compile
backing out Elasticsearch 2.0 because it will require 2.0 to compile

pferrel/PredictionIO,pferrel/PredictionIO,marevol/incubator-predictionio,shimamoto/incubator-predictionio,himanshudhami/PredictionIO,himanshudhami/PredictionIO,pferrel/PredictionIO,shimamoto/incubator-predictionio,takezoe/incubator-predictionio,marevol/incubator-predictionio,dszeto/incubator-predictionio,shimamoto/incubator-predictionio,wangmiao1981/PredictionIO,alex9311/PredictionIO,wangmiao1981/PredictionIO,takezoe/incubator-predictionio,EmergentOrder/PredictionIO,alex9311/PredictionIO,PredictionIO/PredictionIO,PredictionIO/PredictionIO,mars/incubator-predictionio,mars/incubator-predictionio,EmergentOrder/PredictionIO,PredictionIO/PredictionIO,mars/incubator-predictionio,takezoe/incubator-predictionio,mars/incubator-predictionio,himanshudhami/PredictionIO,himanshudhami/PredictionIO,takezoe/incubator-predictionio,shimamoto/incubator-predictionio,wangmiao1981/PredictionIO,marevol/incubator-predictionio,alex9311/PredictionIO,marevol/incubator-predictionio,dszeto/incubator-predictionio,dszeto/incubator-predictionio,dszeto/incubator-predictionio,EmergentOrder/PredictionIO