Added update script

scripts/update

@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+
+git pull && echo "Pulled the latest changes"
+
+if [ "$1" == "clear" ]; then
+    docker-compose down && echo "Shutted down the bot"
+    docker image rm node-cache && echo "Removed the cache"
+    docker image rm illegitimate && echo "Removed the bot image"
+    docker images | grep "<none>" | awk -F" " '{print $3}' | xargs -I {} docker image rm {} && echo "Removed all dangling images"
+    docker build . -f Dockerfile.cache -t node-cach && echo "Rebuilt the cache"
+fi
+
+docker-compose up -d --build && echo "Started the bot"