New style and page requirements the website #2

Page requirements

• Homepage: introduce about the "Hu.js" and show "Buy tickets" big button.
• Schedule: schedule table of the conference, should display 3 days all in one page.
• Speakers: including listing of all speakers page and detail information of one person page.
• Sponsors: listing all sponsors's name and logo.
• Contact: contact information about the organizers.

I think we can refer nodeconf .

Color scheme

Green and blue should be ok.