Add Staticman data

[networkhobot]

Dear human,

Here's a new entry for your approval. :tada:

Merge the pull request to accept it, or close it to send it away.

:heart: Your friend Staticman :muscle:

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Field	Content
reply_to
name	Nam Ngo
email	305dcc613087575771353a3b16054a74
body	Hi Dan,

I have build BeautifulHugo with staticman. With notifications, i know staticman using Mailgun for setting. But Mailgun not Free | | date | 2020-04-11T12:38:45.453Z |