Updating shelljs to 0.2.6. Copy now preserves mode bits.

bin/node_modules/shelljs/scripts/generate-docs.js

@@ -0,0 +1,21 @@
+#!/usr/bin/env node
+require('../global');
+
+echo('Appending docs to README.md');
+
+cd(__dirname + '/..');
+
+// Extract docs from shell.js
+var docs = grep('//@', 'shell.js');
+
+docs = docs.replace(/\/\/\@include (.+)/g, function(match, path) {
+  var file = path.match('.js$') ? path : path+'.js';
+  return grep('//@', file);
+});
+
+// Remove '//@'
+docs = docs.replace(/\/\/\@ ?/g, '');
+// Append docs to README
+sed('-i', /## Command reference(.|\n)*/, '## Command reference\n\n' + docs, 'README.md');
+
+echo('All done.');