Use real conventions

Use real conventions (from the creators of dotenv)! https://github.com/bkeepers/dotenv#what-other-env-files-can-i-use

Author: frederikhors

Node.gitignore

@@ -72,8 +72,10 @@ typings/
 .yarn-integrity
 
 # dotenv environment variables file
-.env
-.env.test
+.env.development.local
+.env.test.local
+.env.production.local
+.env.local
 
 # parcel-bundler cache (https://parceljs.org/)
 .cache