Added todo-list tutorial

Fix localhost link

docs/todo-list-tutorial.md

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+layout: default
+title: Simple todo list with sync
+----
+
+# Simple todo list with sync
+
+This short tutorial shows the very simple application using pouchdb. It replaces [todomvc todos’](http://todomvc.com/vanilla-examples/vanillajs/) localStorage with pouchdb.
+
+First you need to start with cloning pouchdb:
+
+    https://github.com/daleharvey/pouchdb
+
+After that we go straight away to our example todo-list located in tutorials.
+
+To run it - due to [CORS](http://en.wikipedia.org/wiki/Cross-origin_resource_sharing) - you need to put it onto your webserver or start your own. If you have python2 just try: (http.server in python 3)
+
+    python2 -m SimpleHTTPServer 8888
+
+Then simply run our example: [http://localhost:8888](http://localhost:8888). Unfortunately, sync doesn’t work yet.
+
+## Sync
+
+More difficult part concerns couchdb server we want to sync our data to.
+
+If you already have one - you just simply edit the remove variable in app.js file. (you need to create database called todos)
+
+Otherwise, follow [couchdb’s tests](https://github.com/daleharvey/pouchdb/wiki/Running-and-Writing-Tests) tutorial to get couchdb and cors-server up and running. Create todos database and you are ready to go.
+