Change the download button event trigger.

[zhuangya]

It's strange that file downloaded when i click the title What's included?, not the download button.

[travisbot]

This pull request fails (merged 93e7f34 into 6308597).

[zhuangya]

@travisbot Who is this? any human?

[lauriys]

@zhuangya Nope, definitely not human.

[fat]

Hey @zhuangya,

Thanks for opening this pull-request! Unfotunately, it looks like it fails to pass the tests neccessary for submitting to bootstrap. The following tests are currently failing:

• should always be made against -wip branches

For a full list of issue filing guidelines, please refer to the bootstrap issue filing guidelines.

thanks!