Add JavaScript configuration for Hound
Add JavaScript configuration for Hound

This change uses Bootstrap's existing `js/.jshintrc` file
to configure Hound's hosted JSHint instance.

It leaves existing JavaScript linting as-is
because Hound does not support ESLint or JSCS yet.

On each pull request to Bootstrap,
Hound will comment on any JavaScript style violations in-line,
like this:

![screenshot](https://images.thoughtbot.com/hound/javascript-example.png)

If you update the pull request to adopt a suggestion,
the comment will be hidden.

It leaves the existing linting done by Grunt + Travis.

Hound is free for open source projects
and is open source itself:

https://github.com/thoughtbot/hound

llinacont/bootstrap,sanusart/bootstrap,hiersekornc/bootstrap,marcos8667/SuperT,ralic/bootstrap,OneZenD/gr8alpha,ahbing/bootstrap,bhamodi/bootstrap,hiersekornc/bootstrap,yanyon/bootstrap,liubao19860416/bootstrap,df2k2/bootstrap,malux13/bootstrap,Kostersson/bootstrap,KM-MFG/bootstrap,joshreed/bootstrap,bhamodi/bootstrap,121595113/bootstrap,yanyon/bootstrap,llinacont/bootstrap,joshreed/bootstrap,sunhk25/bootstrap,sanusart/bootstrap,alberto/bootstrap,scjang/ssss,Hightrack/bootstrap,alberto/bootstrap,LuoSpark/bootstrap,steamit/bootstrap,mosoft521/bootstrap,panvagil/bootstrap,arigarcia/bootstrap,FernandezR/bootstrap,patrickhlauke/bootstrap,2947721120/Bootstrap,yuhao/mobitools-website,OneZenD/gr8alpha,maxbeatty/bootstrap,aungcvt/bootstrap,nanuclickity/bootstrap,GerHobbelt/bootstrap,algolia/bootstrap,patrickhlauke/bootstrap,wangxianzhe015/bootstrap,antonaavik/bootstrap,aihua/bootstrap,spikebachman/bootstrap,OneZenD/gr8alpha,AbhishekBiswal/bootstrap,novakom-devel/bootstrap-nk,twbs-savage/bootstrap,kuldipem/bootstrap,panvagil/bootstrap,zorca/bootstrap,panvagil/bootstrap,thongredweb/bootstrap,shonderdos/bootstrap,codeclimate-testing/bootstrap,devsong/bootstrap,h3xagram/bootstrappin,aungcvt/bootstrap,blockstack/blockstack-bootstrap,liubao19860416/bootstrap,steamit/bootstrap,stone2310/bootstrap,nanuclickity/bootstrap,justincron/bootstrap,zhouwenbin/bootstrap,Hightrack/bootstrap,aJayBold/ccdemo,Laurab-io/codeschoolGitDemo2,gencer/bootstrap,292388900/bootstrap-1,nanuclickity/bootstrap,Pletron/bootstrap,paulmolluzzo/bootstrap,JuanKiss/Prueba,sunhk25/bootstrap,LimetecBiotechnologies/bootstrap,slackero/bootstrap,sunhk25/bootstrap,jesbin/bootstrapJME,RanHoNg/bootstrap,Microtrends/bootstrap,Kostersson/bootstrap,bhamodi/bootstrap,Laurab-io/codeschoolGitDemo2,luistelmocosta/bootstrap,blockstack/blockstack-bootstrap,codeclimate-testing/bootstrap,devsong/bootstrap,h3xagram/bootstrappin,michael-brade/bootstrap,jesbin/bootstrapJME,sanusart/bootstrap,runnerchen/Mybootstrap,OneZenD/gr8alpha,121595113/bootstrap,algolia/bootstrap,Jazzo/bootstrap,michael-brade/bootstrap,oldhawkcn/bootstrap,CapeSepias/bootstrap,xeronith/bootstrap,justincron/bootstrap,tingyuji/boots,zacechola/bootstrap,gustavolipi/teste,zolfer/bootstrap,ralic/bootstrap,mosoft521/bootstrap,monoblaine/bootstrap,JobsUnited/bootstrap,arigarcia/bootstrap,monoblaine/bootstrap,df2k2/bootstrap,hbrls/bootstrap,runnerchen/Mybootstrap,DonCheetle/BootstrapTemplate,CapeSepias/bootstrap,2947721120/Bootstrap,LimetecBiotechnologies/bootstrap,WangJie2/bootstrap,hiersekornc/bootstrap,gustavolipi/teste,jesbin/bootstrapJME,shonderdos/bootstrap,Pletron/bootstrap,malux13/bootstrap,ProgramUY/tree,LuoSpark/bootstrap,antonaavik/bootstrap,mdo/bootstrap,yuhao/mobitools-website,the-open-university/ouice-bootstrap,aJayBold/ccdemo,aungcvt/bootstrap,joshreed/bootstrap,pat270/bootstrap,ProgramUY/tree,Jazzo/bootstrap,2947721120/Bootstrap,ProgramUY/tree,spikebachman/bootstrap,bassjobsen/bootstrap,zolfer/bootstrap,runnerchen/Mybootstrap,bassjobsen/bootstrap,zacechola/bootstrap,jmknoll/bootstrap,yanyon/bootstrap,bkrukowski/bootstrap,zhouwenbin/bootstrap,tingyuji/boots,marcos8667/SuperT,zorca/bootstrap,Softdocs/bootstrap,colinadamwebb/WebSite1,Hightrack/bootstrap,KM-MFG/bootstrap,wangxianzhe015/bootstrap,patrickhlauke/bootstrap,slackero/bootstrap,wangxianzhe015/bootstrap,DonCheetle/BootstrapTemplate,gencer/bootstrap,upyun-dev/bootstrap,gustavolipi/teste,Kostersson/bootstrap,thongredweb/bootstrap,thongredweb/bootstrap,twbs-savage/bootstrap,liubao19860416/bootstrap,the-open-university/ouice-bootstrap,spikebachman/bootstrap,slackero/bootstrap,mosoft521/bootstrap,DonCheetle/BootstrapTemplate,RanHoNg/bootstrap,hbrls/bootstrap,AbhishekBiswal/bootstrap,codeclimate-testing/bootstrap,llinacont/bootstrap,colinadamwebb/WebSite1,tingyuji/boots,arigarcia/bootstrap,llinacont/bootstrap,maxbeatty/bootstrap,kuldipem/bootstrap,mdo/bootstrap,FernandezR/bootstrap,kuldipem/bootstrap,JobsUnited/bootstrap,ahbing/bootstrap,alberto/bootstrap,aihua/bootstrap,monoblaine/bootstrap,the-open-university/ouice-bootstrap,upyun-dev/bootstrap,zolfer/bootstrap,oldhawkcn/bootstrap,paulmolluzzo/bootstrap,justincron/bootstrap,sanusart/bootstrap,hbrls/bootstrap,121595113/bootstrap,paulmolluzzo/bootstrap,Pletron/bootstrap,colinadamwebb/WebSite1,bkrukowski/bootstrap,Laurab-io/codeschoolGitDemo2,2947721120/Bootstrap,bassjobsen/bootstrap,LeslieJane/aboutme,paulmolluzzo/bootstrap,Jazzo/bootstrap,colinadamwebb/WebSite1,jmknoll/bootstrap,tingyuji/boots,shonderdos/bootstrap,scjang/ssss,RanHoNg/bootstrap,malux13/bootstrap,michael-brade/bootstrap,aJayBold/ccdemo,alberto/bootstrap,FernandezR/bootstrap,jmknoll/bootstrap,zhouwenbin/bootstrap,aJayBold/ccdemo,k8e/bootstrap-web1.5,ahbing/bootstrap,blockstack/blockstack-bootstrap,aihua/bootstrap,GerHobbelt/bootstrap,aungcvt/bootstrap,JuanKiss/Prueba,k8e/bootstrap-web1.5,LeslieJane/aboutme,ralic/bootstrap,upyun-dev/bootstrap,seoulstore/ssss,292388900/bootstrap-1,Laurab-io/codeschoolGitDemo2,Microtrends/bootstrap,kul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