Merge pull request #7 from yangtaooo/master

update package:context to official package

Fix example error

Update readme doc

Merge pull request #5 from bolsunovskyi/master

return err in New constructor

Merge pull request #3 from kldeng/master

Add TestRefreshLockTTL to enable keeping the

Delete Godeps

Fix logic bug discribed by issue #1 : If key already existed, you setup watcher and wait till key is deleted... and do not create key. Thanks funny-falcon

Fix bug at issue #1 : there is no way for (*etcdsync.Mutex).Lock() to return err != nil - err is never assigned

update readme.md

Refactor : minimize indentation by early return

Trivial code style change

Export debug logger instead of a function to set it