set default error message as a constant. remove 'while' from old message to avoid truncation

Author: ABaldwinHunter

lib/cc/services/github_pull_requests.rb

@@ -24,6 +24,11 @@ class Config < CC::Service::Config
   # Just make sure we can access GH using the configured token. Without
   # additional information (github-slug, PR number, etc) we can't test much
   # else.
+
+  MESSAGES = [
+    DEFAULT_ERROR = "Code Climate encountered an error attempting to analyze this pull request",
+  ]
+
   def receive_test
     setup_http