Add index.js to .gitignore

Author: The-LukeZ

.gitignore

@@ -23,6 +23,7 @@ jspm_packages/
 
 # Output directories
 dist/
+index.js
 build/
 
 # IDE specific files
@@ -33,4 +34,4 @@ build/
 # Environment variables
 .env
 .env.local
-.env.*.local
+.env.*.local