Merge pull request #51 from AlfredWei/master

Update sponsor info
add media sponsor digitimes

I use their logo from Wikipedia:
http://zh.wikipedia.org/wiki/File:DIGITIMES_Logo.jpg
Merge pull request #52 from AlfredWei/master

[what] Sponsor Info, Fix Typo Error
update sponor Github

Welcome aboard :)
change sponsor digitimes logo
make BoF list two-column
update accepted BoFs
add sponsor (special thanks) LIVEHouse.in
sync ja sponsor with en
update sponsor LIVEHouse.in info
Rename Tutorial Chinese Title for Better Highlight.
Merge pull request #53 from AlfredWei/master

[what] Sponsor, introduce Showtime and job fair
restyle and tweak content

- all sponsor logo gets a link
- add responsive layout of logo
Merge pull request #54 from l34marr/tutorial

Rename Tutorial Chinese Title for Better Highlight.
update en version
update some grammar
remove duplicated title
tweak tutorial zh content, mostly spacing
fix responive layout of keynote speaker

on smaller screen, size of protrait is more constrained
update ja version