(#11) Provide a way to delete all vms acquired by token

This commit adds a way for a user to delete all vms that were obtained
by a specific token. It will ask the user if they are sure before
deleting everything.

lib/vmfloaty/auth.rb

@@ -49,7 +49,7 @@ class Auth
     res_body = JSON.parse(response.body)
 
     if res_body["ok"]
-      puts res_body
+      res_body
     else
       STDERR.puts "There was a problem with your request:"
       puts res_body