update demo img url
add `measureScrollbar` util
resolves #53
Merge pull request #86 from allmobilize/codename-h

Codename h
Merge pull request #87 from allmobilize/hzp

Hzp
add navbar style deps
cancel share.js auto init
update modal.js
Merge pull request #88 from allmobilize/codename-h

update navbar & modal.js