chroe: add list wrapper

@@ -5,7 +5,7 @@ const mkdirp = require('mkdirp');
 function parseJSON(root) {
   const dirs = readdirSync(root);
   const type = basename(root);
-  return dirs.reduce((memo, dir) => {
+  const list = dirs.reduce((memo, dir) => {
     if (dir.charAt(0) === '.') return;
     const absDirPath = join(root, dir);
     const pkg = require(join(absDirPath, 'package.json'));
@@ -21,6 +21,7 @@ function parseJSON(root) {
     });
     return memo;
   }, []);
+  return { list };
 }
 
 function generate(root) {