Make ./data the default root folder (#510)

* Make ./data the default root folder

* Add ./data to .gitignore

* Fix typo in help text

Author: dmitrizagidulin

.gitignore

@@ -16,5 +16,4 @@ npm-debug.log
 /.db
 .nyc_output
 coverage
-/index.html
-/index.html.acl
+/data

bin/lib/options.js

@@ -10,9 +10,9 @@ module.exports = [
   // },
   {
     name: 'root',
-    help: "Root folder to serve (defaut: './')",
+    help: "Root folder to serve (default: './data')",
     question: 'Path to the folder you want to serve. Default is',
-    default: './',
+    default: './data',
     prompt: true,
     filter: (value) => path.resolve(value)
   },