Just type cmd-shift-p / ctrl-shift-p to bring up the command palette and pick Package Control: Install Package from the dropdown, search and select the CommandBox package there and you're all set.
Start the program Applications > Utilities > Terminal · Type cd and a space in the Terminal window · Switch to Sublime Text and select Preferences ...
You can open Packages list by pressing Cmd-Shift-P (on Windows should be Ctrl-Shift-P ), choosing Package Control: list packages then select the package you ...