added script to display current year instead of hard coded year

[abhiram11]

This will remove the necessity to manually update the copyright year for every new year.

[bitcoinbrisbane]

+1. Looks like this project is dying. The v6 documentation is poor. Simple PRs like this one sitting for years...

[ricmoo]

Sorry. I should close it.

I prefer not to add scripting to static pages. But certainly the date should be updated. I will add this to my list for the week.