print login error if in debug mode

pandora_client/__init__.py

@@ -297,6 +297,8 @@ class Client(object):
                 self.user = r['data']['user']
             else:
                 self.user = False
+                if DEBUG:
+                    print r
                 print '\nlogin failed! check config\n\n'
                 sys.exit(1)
             r = self.api.init()