Add gif to readme

.gitignore

@@ -136,3 +136,5 @@ dmypy.json
 
 # Cython debug symbols
 cython_debug/
+
+.vscode

README.md

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+![gif of cloud shaped lamp blinking](https://github.com/chuckdries/cloud-sign/raw/main/C0235.gif)
+
+> apologies for the gif, it looks smooth in person but it's surprisingly difficult to cleanly capture video of PWM controlled lights
+
 Designed to power a lamp from a raspberry pi. Turns GPIO17 on if internet works, pulses if internet doesn't
 
-install: link or copy cloudsign.service to `/lib/systemd/system`
+install: symlink or copy cloudsign.service to `/lib/systemd/system`
 
 start: `sudo systemctl start cloudsign`  
 stop: `sudo systemctl stop cloudsign`