Automatically retrieve payslip PDFs from ADP Freedom, which ironically despite the name only works in Internet Explorer by default.

See ./payslip.sh -h for usage instructions.

Requires gdate aka GNU date on macOS. You can obtain this with brew install coreutils if running Homebrew. Requires wget You can obtain this with brew install wget if running Homebrew.

Assumptions:

• You're in the UK and paid only once a month.
• You're paid on the 27th.
• You have registered for an account on myfreedom.adp.com and logged in and accepted the terms

Patches welcome.