add npm sub-commands

package.json

@@ -16,6 +16,8 @@
     "less": "2.7.1"
   },
   "scripts": {
+    "start": "node server.js",
+    "dev": "DEV=1 node server.js",
     "lint": "jshint --config .jshintrc --exclude-path .jshintignore .",
     "test": "node TestSelenium.js",
     "template": "cd customize.dist/src && for page in ../index.html ../privacy.html ../terms.html ../about.html ../contact.html ../what-is-cryptpad.html ../../www/login/index.html ../../www/register/index.html ../../www/settings/index.html ../../www/user/index.html;do echo $page; cp template.html $page; done;"