Integrate testing with browserstack
only run browserstack tests in Travis
Merge pull request #9165 from twbs/browserstack

Browserstack testing integration (rebased, squashed, tweaked)
update phantomjs link
Fix spacing after '=' 

Just added a space after a function definition to tidy up the code.
Merge pull request #9169 from bwhitty/3.0.0-wip

Fix spacing after '=' in popover.js
grunt dist on spacing change
fixes #9162: add mention of Windows Phone 8 and IE10 bugs with responsive foo
Merge pull request #8731 from nrw/patch-1

Format multiple badges in list-group-item
For @cvrebert
grunt dist on previous commit
add third party support section to the docs
Fix #9174: pad bottom of navbar collapsed content and clear floated contents
Merge pull request #9171 from twbs/bs3_winph8_ie10_bug_town_usa_omgwtfbbq

Fixes #9162: add mention of Windows Phone 8 and IE10 bugs with responsive foo
Fixes #8749: prevent navbar nav from overlapping navbar toggle
Pull from GitHub downloads for latest v3-wip on homepage

/cc @cv
Merge branch '3.0.0-wip' of github.com:twbs/bootstrap into 3.0.0-wip
Merge branch '3.0.0-wip' into bs3_third_party_support_docs
some copy editing
Merge pull request #9175 from twbs/bs3_third_party_support_docs

BS3: Add third party support docs