Add uninstall script to repo

Scripts/uninstall.sh

@@ -0,0 +1,50 @@
+#!/usr/bin/env bash
+
+set -e
+
+identifier="com.ninxsoft.mist.helper"
+files=(
+  "/Applications/Mist.app"
+  "/Library/LaunchDaemons/$identifier.plist"
+  "/Library/PrivilegedHelperTools/$identifier"
+)
+did_something=""
+
+# check for escalated privileges
+if [[ ! "$EUID" == 0 ]] ; then
+  echo "This script needs to be run as root! Exiting..."
+  exit 0
+fi
+
+# unload privileged helper tool
+if launchctl print "system/$identifier" &> /dev/null ; then
+  echo "Unloading Privileged Helper Tool..."
+  launchctl bootout "system/$identifier"
+  did_something="Yes"
+fi
+
+# remove files
+for file in "${files[@]}" ; do
+
+  if [[ -e "$file" ]] ; then
+    echo "Removing '$file'..."
+  fi
+  
+  if [[ -f "$file" ]] ; then
+    rm "$file"
+    did_something="Yes"
+  fi
+
+  if [[ -d "$file" ]] ; then
+    rm -r "$file"
+    did_something="Yes"
+  fi
+done
+
+if [[ -n "$did_something" ]] ; then
+  echo "Done!"
+else
+  echo "Nothing to do!"
+fi
+
+exit 0