compress images
convert favicon.gif to ico
index.html: use tabs for consistency
index.html: remove type="text/css" since it's not needed anymore and use double quotes for consistency
index.html: specify image dimensions
ignore all .DS_Store files
remove trailing spaces
index.html: reindent
rename the images folder to img
fix a few JSHint warnings
update jQuery to 1.8.3, jQuery UI to v1.10.1 and jquery smooth-scroll to v1.4.10