The Shopify guard uploads template modifications directly to Shopify, allowing you to forego the existing Textmate bundle and use any editor you like to modify Shopify templates.
Please be sure to have Guard installed before you continue.
Install the gem:
$ gem install guard-shopify
Add guard-shopify to your Gemfile (inside the development group):
group :development do gem 'guard-shopify' end
Add the guard definition to your Guardfile:
$ guard init guard
When first run the gem will prompt you to enter your API key, password and store url. Follow these instructions to get this information (you only need to do it once).