Merge pull request #104 from epochtalk/guardian-fix

fix(config/runtime): add issuer for guardian_config in :prod

Author: akinsey

config/runtime.exs

@@ -117,6 +117,7 @@ guardian_config =
   case config_env() do
     :prod ->
       [
+        issuer: "EpochtalkServer",
         secret_key:
           get_env_or_raise_with_message.(
             "GUARDIAN_SECRET_KEY",