Update Announcement for Data Analytics Rescheduling.
Update Date Info.
Merge pull request #55 from l34marr/tutorial

Update Announcement for Data Analytics Rescheduling.
tweak style and date format
tweak layout; make sponsor logos centered
add Patron section; AcoMo Tech should be patron
sync ja version
fix patron layout
relayout html syntax
sync sponsor page; add zilians
add Appier Inc.