README.md update needed

[liangqi]

For your Gmail account, need to turn "Less secure app access" -> "Allow less secure apps" from OFF to ON.

https://myaccount.google.com/lesssecureapps

[tangingw]

Thanks for the message. I do have the less secure apps access ON. Apologize for overlook that detail.

…

On Wed, Jun 20, 2018 at 7:35 PM, Liang Qi ***@***.***> wrote: For your Gmail account, need to turn "Less secure app access" -> "Allow less secure apps" from OFF to ON. https://myaccount.google.com/lesssecureapps — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#2>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ADNK4qPCMo6R2RQvsYObXX-P09Iwib6aks5t-jOQgaJpZM4UvGlh> .

-- James Ing Wei Tang (鄭應偉)