add crowdsource case

[xujinyang]

if you need test account,please sent email to [email protected]

[facebook-github-bot]

By analyzing the blame information on this pull request, we identified @brentvatne, @chirag04 and @mkonicek to be potential reviewers.

[facebook-github-bot]

Thank you for your pull request and welcome to our community. We require contributors to sign our Contributor License Agreement, and we don't seem to have you on file. In order for us to review and merge your code, please sign up at https://code.facebook.com/cla - and if you have received this in error or have any questions, please drop us a line at [email protected]. Thanks!

[mkonicek]

Very cool!

I've just merged another PR that added an app to the end of the list. You might want to wait until it's merge and then rebase.

[brentvatne]

Please rebase @xujinyang

[facebook-github-bot]

@xujinyang updated the pull request.

[bestander]

@xujinyang, another branch that breaks the build became part of this PR.
You may find this useful: http://stackoverflow.com/questions/7929369/how-to-rebase-local-branch-with-remote-master

[chirag04]

@facebook-github-bot close

[chirag04]

duplicate of ##6718