Update README.md

README.md

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 # ultimaker-s5-timelapse
 A script to automatically recover timelapses from 3D printing
+
+`ultimaker-s5-timelapse` was created by [Clément Chaine](https://github.com/cchaine)
+
+## Requirements
+
+```
+python >= 2.7
+ffmpeg >= 4.1.1
+```
+
+## Usage
+
+Your Ultimaker S5 printer and your computer need to be connected to the same network.
+```
+usage: python ultimaker_s5_timelapse [-h] -ip IP
+
+    IP is the local ip address of your printer
+```