Added an appropriate mime type for .woff2

[pprishchepa]

Related PR #255.

[iryston]

@PavelPrischepa thank you for PR! I want to pay attention that according to w3c recommendation WOFF 2.0 is an improvement on WOFF 1.0. The two formats have different Internet Media Types and may be used in parallel.
So, WOFF2 mime type should be

application/font-woff2                 woff2;

[pprishchepa]

@iryston Thank you for the remark. But I'm not sure, Is there any way to change the PR, or do I need to create a new one?

[iryston]

To update a PR, even if you have removed the original remote branch out of which the PR was created, you just need to:

• Fetch the PR (git fetch pull/<id>/head:branchname and git checkout branchname).
• Add new commits, amend, rebase, do whatever you like.
• Push or push force (git push remote +branch).

And after that the PR will be automagically updated

[perusio]

• Thanks.

[iryston]

@perusio can you change
application/font-woff woff2;
to
application/font-woff2 woff2;
or it will be better to make a new PR?