Sublime Text 2 Preferences.
NOTE: .json extensions added for Gist syntax highlighting. It should be stripped.
Open the following menu item: Sublime Text 2 -> Preferences -> Settings -- User and add the content of the Preferences.sublime-settings file. Tweak as you see fit. The save_on_focus_lost setting is really nice for Continuous Testing. For example, if you have an SBT ~test session running in a terminal, then when you're finish editing your code just cmd+tab over and your test starts compiling/executing. Saucy.
For the formatting key mappings, open the following menu item: Sublime Text 2 -> Preferences -> Key Bindings -- User and add the content of the Default (OSX).sublime-keymap -- User file. ctrl+f will reindent your current selection. ctrl+shift+f will reindent the whole file.