This is a simple Ruby todo list app built using Sinatra and DataMapper for a workshop being held as part of National Coding Week.
Some of the ideas and code are based on these existing Sinatra tutorials:
Just Do It: Learn Sinatra http://www.sitepoint.com/just-do-it-learn-sinatra-i/
Getting started with Sinatra http://www.creativebloq.com/web-design/get-started-sinatra-9134565
Singing with Sinatra - The Recall App http://code.tutsplus.com/tutorials/singing-with-sinatra-the-recall-app--net-19128