bugfix: mongo driver runCommand , and fix socket.close
add comment for socket.close
change api name bson.encode_order
remove testconnection
support socket.abandon / socket.start , Issue #73
more example for echo socket service
shift time before dispatch timer message
disable code cache by default and always register skynet.codecache
bugfix: mongo disconnect. self.__sock can't be nil because of metatable
Merge pull request #1 from cloudwu/master

test