Add Docs Generation to Helper commands

[justinthec]

Addresses: #176

When running bin/create-transform transform-name:

• docs/transform-name.md is created using the template transform-cli/templates/documentation.md.template

When running bin/rename-transform transform-name other-transform-name:

• docs/transform-name.md is renamed to docs/other-transform-name.md and has all dash-cased instances of tranform-name replaced with other-transform-name in its contents.

@GoodForOneFare @lemonmade

[GoodForOneFare]

👍 Thanks for taking care of this! Much appreciated.