All API functions are described in doc http://docs.smcom.com/
This document explains the basic settings of dashboard. Dashing is a very powerful tool. However, there is complete documentation online, updated by the publisher and the community.
⇨ http://dashing.io/ product page
⇨ https://github.com/Shopify/dashing/wikieditor FAQs
⇨ https://www.ruby-lang.org/fr/documentation/quickstart/ Ruby in 20 minutes
⇨ https://www.ruby-lang.org/fr/documentation/ Ruby Documentation
⇨ http://coffeescript.org/ Coffeescript Documentation (to program a widget)
⇨ http://www.stuartellis.eu/articles/erb/ Introduction to the ERB template (used to generate the html code in Ruby).