Fixed Issue 48:	incorrect return type of GetUint64()
Fixed Issue 48:	incorrect return type of GetUint64()
jordan-green/rapidjson,gdfreeman/rapidjson,byzhang/rapidjson,jordan-green/rapidjson,gdfreeman/rapidjson,jordan-green/rapidjson,gdfreeman/rapidjson,byzhang/rapidjson,byzhang/rapidjson