Fix Typo
Add perf and duo talks.
Add design best practices.
Fix erroneous end date.

Off by one error. Thanks @mafintosh.
Increase font-size overall.
Tune display a bit.
Update title for @MauriceButler & @KoryNunn talk.
Add node for php developers talk.
Add webrtc talk.
Add tessel & browser testing presentations.
Add node-webkit
Add damon bio
Link up node-webkit
Link up tessel.