Update README.md

Author: zohozer

README.md

@@ -1,2 +1,6 @@
 # YT-Channel-videos
-Scans a Youtube channel for all available videos.
+Scans a Youtube channel for all available videos and prints the result on console and into an external file called '\_list.txt' into the same directory where the script it is located.
+
+It requires as input a Youtube channel ID in the form of 'https://www.youtube.com/channel/UCWr0mx597DnSGLFk1WfvSkQ' or 'UCWr0mx597DnSGLFk1WfvSkQ'
+
+It is using as dependency the ['scrapetube' PIP module](https://github.com/dermasmid/scrapetube) by [dermasmid](https://github.com/dermasmid) that can be installed by typing 'pip install scraptube' into console.