added readme and notify.sh

README.md

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+# Scripts
+This is just a handy place to put shell scripts that I write.
+
+
+
+## notify.sh
+A script that wraps the pushover API for sending notifications.
+[Here](https://learningunix.net/posts/dead-simple-notifications-with-pushover/)
+is an article on example usage. It relies on the user's pushover user and api key
+to be saved as environment variables.

notify.sh

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+#!/bin/sh
+
+/usr/bin/curl -s \
+  --form-string "token=$PUSHOVER_TOKEN" \
+  --form-string "user=$PUSHOVER_USER" \
+  --form-string "title=$1" \
+  --form-string "message=$2" \
+  https://api.pushover.net/1/messages.json