Image token demo.
add  pinned-section-listview-demo
add pinned-section-listview-demo
add simple demo
add PLS demo

初步demo
add PSL demo

初步demo 完成
add PSL demo
add PSL demo
add PLS demo
1.item animation,add 2.other animation,add
apk example,add
Add otto demo.
Move gitignore
Delete unused file
Modify standard file
Token demo , You can implement getToken() yourself.it’s just based on
your demand.
完善demo

添加下拉刷新
add  readme
Update README.md
Update README.md