add countdown page
Merge pull request #40 from scaleconf/countdown

add countdown page
Merge branch 'develop'
New /speak page for pointing speaker submissions at
Merge branch 'master' into feature/issue-42-call-for-papers-page
updated with alternative content
updated speak submission with bolded keywords
updated speak submission with @JennP changes
Merge branch 'feature/issue-42-call-for-papers-page' into develop