feat(exec_watch) add action in env
feat(watch_exec) add recursive flag to watch_exec
doc(watch_exec) add a recursively watch_exec example
feat(hendle.go) add etcd_index, raft_index and raft_term in extended format
Merge pull request #44 from xiangli-cmu/more_info_on_extend

feat(hendle.go) add etcd_index, raft_index and raft_term in extended format
fix(exec_watch) fix arg order change after successfully parsing flags
feat(ls_command.go) add recursive flag to ls
doc(readme.md) doc about ls with recursive
Merge pull request #45 from xiangli-cmu/ls_recursive

feat(ls_command.go) add recursive flag to ls
Merge pull request #42 from xiangli-cmu/watch_exec

feat(exec_watch) add action in env
bump(github.com/coreos/go-etcd/etcd):
bump(github.com/coreos/etcd/error):
bump(github.com/coreos/etcd/store):