Add english documentation
Add english documentation

RickyDan/eventproxy,mujiansu/eventproxy,JacksonTian/eventproxy,JacksonTian/eventproxy,lys829/eventproxy,alsotang/eventproxy,newlandlty/eventproxy,quietdog/eventproxy,spmjs/eventproxy,mujiansu/eventproxy,yyx990803/eventproxy,spmjs/eventproxy,newlandlty/eventproxy,quietdog/eventproxy,RickyDan/eventproxy,lys829/eventproxy,alsotang/eventproxy