Update documentation, and other files [skip ci]

Author: fedefernandez

AUTHORS.md

@@ -29,5 +29,6 @@ These are the people that have contributed to the _sbt-mu-srcgen_ project:
 - [![dmarticus](https://avatars.githubusercontent.com/u/4853149?v=4&s=20) **dmarticus**](https://github.com/dmarticus)
 - [![sloshy](https://avatars.githubusercontent.com/u/427237?v=4&s=20) **sloshy**](https://github.com/sloshy)
 - [![franciscodr](https://avatars.githubusercontent.com/u/1200151?v=4&s=20) **franciscodr**](https://github.com/franciscodr)
+- [![markvandertol](https://avatars.githubusercontent.com/u/2835719?v=4&s=20) **markvandertol**](https://github.com/markvandertol)
 - [![ThatScalaGuy](https://avatars.githubusercontent.com/u/7647945?v=4&s=20) **ThatScalaGuy**](https://github.com/ThatScalaGuy)
 - [![davesmith00047](https://avatars.githubusercontent.com/u/119872582?v=4&s=20) **davesmith00047**](https://github.com/davesmith00047)

README.md

@@ -16,7 +16,7 @@
 For installing this plugin, add the following line to your `plugins.sbt` file:
 
 ```sbt mdoc:silent
-addSbtPlugin("io.higherkindness" % "sbt-mu-srcgen" % "0.31.0")
+addSbtPlugin("io.higherkindness" % "sbt-mu-srcgen" % "0.31.1")
 ```
 
 ### NOTE