Tellme script can now tell if post failed.

This is a very fragile implementation of this, but I didn't want to add
any dependencies to this script since I want it to be able to portable
above all else. If anyone has a better solution I would love to hear it.

zsh/modules/bin/tellme

@@ -38,7 +38,8 @@ curl -s \
   --form-string "token=$application_token" \
   --form-string  "user=$user_token" \
   --form-string  "message=$message" \
-  https://api.pushover.net/1/messages.json 1>/dev/null
+  https://api.pushover.net/1/messages.json \
+  | grep "\"status\":1," 1>/dev/null
 
 [[ $? -eq 0 ]] && echo "message sent" || echo "ERROR SENDING NOTIFICATION"