version 1.3.0

Merge pull request #15 from sj-js/develop

update version

Update document

Update document

Merge branch 'master' of https://github.com/sj-js/crossman

fix error - missing api_key issue by dpl v2

Update .travis.yml and package.json

Update document.

Remove dist directory from git repository

Update - add searchEl function, modify getBoundingPageRect function ...