Update README.md
Merge branch 'master' of https://github.com/eminom/libpomelo
Merge pull request #18 from eminom/master

Merge pull request to fix cleanup issue.
Merge branch 'master' of github.com:NetEase/libpomelo
remove logs
Merge pull request #22 from eminom/master

Bug fixed: Close socket in pc_transport_t when connection fails.
Merge pull request #23 from eminom/master

Bug fixed(As the previous one) Missing codes.
Merge pull request #24 from eminom/master

Exposing the asynchronous version of pc_client_connect
pc__client_force_join should test client->worker first