Optimize SVGs
Add `opera-next.svg`
Merge pull request #19 from alrra/optimize-svgs

Optimize SVGs
Merge pull request #20 from alrra/opera-next-svg

Add `opera-next.svg`
Add `ie10.svg` and `ie10.png` (fix #16)

Thanks @pankajparashar for the links.
Merge remote-tracking branch 'upstream/master'