added docs body class
added module card markup
styles for toggle buttons
removed extra (i think?) white space
pointed footer Contribute links to ampersandjs.com/contribute
moved link to #sizes onto the word details only
Update doc.md
added amp illustration to intro section
adjustments to size of illustration
reduced top margin of very first h1
adjusted nav styling since there is only the logo
fix remove-class bug found by @latentflip #7
fix inefficient repeated operation in 'hasClass' per #7
fix delay example.
improve doc for .bind to be less strong language.
improve doc for 'before' to make slightly less confusing. for #7
merge after rebuild