Add description in README

README.md

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 # Trello-2-Mail
 
+Every morning, get the content of your favorite board by email
 
 
 ## References
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 - Sending emails with SSL : https://gist.github.com/chrisgillis/10888032
 - Project layout https://github.com/golang-standards/project-layout
 - Markdown rendering https://github.com/russross/blackfriday
-
+- https://gist.github.com/jklymak/86a518b62cf47bb4fdcf3f5abdef9bcd