Update documentation, and other files [skip ci]

Author: juanpedromoreno

AUTHORS.md

@@ -8,12 +8,13 @@
 
 The maintainers of the project are:
 
-
+- [![47erbot](https://avatars.githubusercontent.com/u/24799081?v=4&s=20) **47erbot**](https://github.com/47erbot)
 
 ## Contributors
 
 These are the people that have contributed to the _sbt-exercise_ project:
 
 - [![47erbot](https://avatars.githubusercontent.com/u/24799081?v=4&s=20) **47erbot**](https://github.com/47erbot)
 - [![juanpedromoreno](https://avatars.githubusercontent.com/u/4879373?v=4&s=20) **juanpedromoreno**](https://github.com/juanpedromoreno)
-- [![fedefernandez](https://avatars.githubusercontent.com/u/720923?v=4&s=20) **fedefernandez**](https://github.com/fedefernandez)
+- [![fedefernandez](https://avatars.githubusercontent.com/u/720923?v=4&s=20) **fedefernandez**](https://github.com/fedefernandez)
+- [![jisantuc](https://avatars.githubusercontent.com/u/5702984?v=4&s=20) **jisantuc**](https://github.com/jisantuc)