update footer to dynamically display current year

[zahyaah]

Issue #87

Changes made

• Replaced the static year text with a <span id="year"> </span> element.

• Added a JavaScript snippet that sets the text content of the span to the current year when the page loads.

[sekpd]

Wouldn't it be better to use something like:

<p>© {new Date().getFullYear()}. All rights reserved.</p>

so the footer date is generated statically during build and isn't dependent on user's system date?

[zahyaah]

Oh yes, let me change that quickly @sekpd
Thanks mate :)