Update README

Author: Leonardo Gatica

README.md

@@ -2,3 +2,17 @@ anime-dl
 ========
 
 CLI for show anime whit subs in spanish.
+
+Install
+-------
+
+``` bash
+[sudo] npm i -g anime-dl
+```
+
+Use
+---
+
+``` bash
+anime-dl
+```