New client configuration pattern (#937)

* adding in initial config files

* working config files

* updating the client config pattern to default to dev instead of prod

* updating the npm script commands and docs

* Adding a helpful debugging log for the webpack build

* adding in more supporting documentation for running against production

* updating README.md and removing the unneeded ENV var

.gitignore

@@ -11,3 +11,4 @@ dist/
 *.zip
 build/
 !dev-server.shared.pem
+config/development.json