Merge pull request #52 from rappleg/master

Fixed typo in Chris Bartling's name in list of presenters.
Added Gradle presentation
Added Shaun's slides/code links.
Modified nav to Home Archive Calendar Discussion Contact
Provide sensible defualts for max number of calendar items to show
Upgraded template to smart_v1_0_4.
Added more footer social icons.
Added more presentation photos.
Added more presentation photos.
Added a few different ways to display social icons.
Added a few different ways to display social icons.
Added a few different ways to display social icons.