fix(package): eslint compliance on commonjs index

Author: medfreeman

Diff for: index.js

@@ -1,3 +1,4 @@
-var netlifyCmsModule = require("./dist/module.js");
+const netlifyCmsModule = require("./dist/module.js");
+
 module.exports = netlifyCmsModule.default;
 module.exports.meta = netlifyCmsModule.meta;