Capistrano Callbacks
Neat way to pre-initalize something in capistrano before a task is run
on :start do verifyParametersAndInitialize()end
callback options:
:before, triggered before a task is invoked
:after, triggered after a task is invoked
:start, triggered before a top-level task is invoked via the command-line
:finish, triggered when a top-level task completes
:load, triggered after all recipes have [...]