fix headerTimeout should be longer and body should be shorter
refactor use transtiemout
fix close connection when client leaves
Merge pull request #265 from xiangli-cmu/fix-timeout

headerTimeout should be longer and body should be shorter
Merge pull request #267 from xiangli-cmu/fix-wait-handler

fix wait handler should close connection if client leaves
Merge branch '0.2' of https://github.com/coreos/etcd into 0.2