Configuration
In extension settings (Install Tool) you will find just one option:
exportDirectory
If empty, your created extensions will be exported to
[TYPO3 temp. dir]/ by default. I prefer to set this
directory to packages/. That's the default import directory for local
available packages.
This setting can not be set via CLI usage.
activateModule
EXT:ext_kickstarter comes with a TYPO3 backend module to kickstart your extensions visually. Is this feature is not full featured and beta, this module is hidden by default. If you are really sure you want to experiment a bit, feel free to activate the module.