Update and rename ticket-demo.md to 林鸿-D2邀请函申请.md

wrote the application in-place.
Update 林鸿-D2邀请函申请.md

corrected weibo link
Update 林鸿-D2邀请函申请.md

corrected zhihu link and cleaned the application
Merge pull request #49 from plantvsbirds/master

欢迎，:D