Update README.md

README.md

 # Cartero - Newsletter django app
 
-**Author:** Adrián Ribao. [Twitter](http://twitter.com/AdrianRibao).
-
 Cartero is a newsletter app for Django with the following features:
 
 * Inline template editing
@@ -13,7 +11,11 @@ Cartero is a newsletter app for Django with the following features:
 * Dinamic variables in templates
 * It's possible to send test emails
 
-TODO:
+# TODO:
 
 * Rate Limit emails
 * Create lists of users
+
+# Authors
+
+* Adrián Ribao. [Twitter](http://twitter.com/AdrianRibao).
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