Merge pull request feedbin#405 from angristan/rake-task-make-admin

Add rake task to promote users to admin

lib/tasks/feedbin_make_admin.rake

@@ -0,0 +1,12 @@
+namespace :feedbin do
+  desc "Promote user to admin status"
+  task :make_admin, :email do |task, args|
+    if args[:email]
+      User.find_by_email(args[:email]).update(admin: true)
+      puts "User with email #{args[:email]} is now an admin."
+    else
+      puts "Invalid command, use: rake feedbin:make_admin[email]"
+      exit 1
+    end
+  end
+end