Add missing page description to index.html.
Compress images/ncip.jpg with kraken.io.

Before: 92164 bytes
After:  88120 bytes
Revert "Use a 16x16 favicon.ico."

This reverts commit 65b40ef7e65eb72683bc268c78c4e98f1f094197.

The 32x32 image is used in high dpi displays.
Merge pull request #181 from XhmikosR/gh-pages

Minor improvements