增加QQ邮箱
Merge pull request #1 from andris9/master

上游合并
Revert "增加QQ邮箱"

This reverts commit 8690546c38257ffdf2d869e3203e7b8e6e1d8564.
增加QQ邮箱的支持

顺便修改.gitignore
update README on repo

andris9/Nodemailer#157
Merge pull request #157 from meteormatt/master

Add QQ to well known services for SMTP