Add 'fill' property

[olegafx]

SVG icons uses fill property to set colors

[rsanchez]

Thanks. Can you add a test to test/test.js?

    it('should extract fill.', function (done) {
        test(
            'svg { fill: red; } p { display: block; }',
            ['red'],
            {},
            done
        );
    });

[olegafx]

Done. But now build check failed. Is it ok?…

[rsanchez]

@olegafx This is the line causing the CI to fail.

test/test.js
  240:1  error  Trailing spaces not allowed  no-trailing-spaces

Making this line a blank line instead of 4 spaces should fix it. Do that and I'll merge. :D

[rsanchez]

Thanks for your contribution!