Log out fails in final product

[Martian2Lee]

After you authed with google account, if you try to log out, you won't get the log out message, and in the redux debugger, you can see the actions run like crazy.

[warborn]

Hi @Martian2Lee, thank you for your input! I forgot that the issue was there, i made a PR to fix it, you can pull the master branch and test it out :D

[Martian2Lee]

Thank you warborn, your version of Duckr is really inspiring~ Keep the good work~