bump(github.com/coreos/go-etcd/etcd):
bump(github.com/codegangsta/cli): f7c1cd9a11e75b5ad458628188f733a325e14ca5
fix(cli dependency) remove a extra field
feat(rm_command.go) support comapreAndDelete
doc(readme.md) add compareAndDelete example
Merge branch 'CAD' of github.com:xiangli-cmu/etcdctl into xiangli-cmu-CAD

Conflicts:
	third_party/github.com/codegangsta/cli/app_test.go
	third_party/github.com/coreos/go-etcd/etcd/client.go
	third_party/update