add some packages

node_modules/readdirp/examples/stream-api-pipe.js

@@ -0,0 +1,19 @@
+var readdirp =  require('..')
+  , path = require('path')
+  , through = require('through2')
+
+// print out all JavaScript files along with their size
+readdirp({ root: path.join(__dirname), fileFilter: '*.js' })
+  .on('warn', function (err) { console.error('non-fatal error', err); })
+  .on('error', function (err) { console.error('fatal error', err); })
+  .pipe(through.obj(function (entry, _, cb) { 
+    this.push({ path: entry.path, size: entry.stat.size });
+    cb();
+  }))
+  .pipe(through.obj(
+    function (res, _, cb) { 
+      this.push(JSON.stringify(res) + '\n');
+      cb();
+    })
+  )
+  .pipe(process.stdout);