page add maxSize

Signed-off-by: miaojian <kitemao@gmail.com>
add bugsnag

Signed-off-by: miaojian <kitemao@gmail.com>
fix bug

Signed-off-by: miaojian <kitemao@gmail.com>
close review code

Signed-off-by: miaojian <kitemao@gmail.com>
Merge pull request #46 from kitemao/master

polish