Add SCSS configuration for Hound
Add SCSS configuration for Hound

This change uses Bootstrap's existing `scss/.scss-lint.yml` file
to configure Hound's hosted SCSS-Lint instance.

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

![screenshot](https://images.thoughtbot.com/hound/scss-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

creativewebjp/bootstrap,janseliger/bootstrap,n054/bootstrap,n054/bootstrap,inway/bootstrap,seanwu99/bootstrap,lemuelbarango/bootstrap,jipexu/bootstrap,afuno/bootstrap,seanwu99/bootstrap,joblocal/bootstrap,NCARB/bootstrap,kvlsrg/bootstrap,andresgalante/bootstrap,tjkohli/bootstrap,coliff/bootstrap,zalog/bootstrap,hebbet/bootstrap,Delagen/bootstrap,TheFridayInstitute/bootstrap,9-chirno/chirno,jipexu/bootstrap,joblocal/bootstrap,slavanga/bootstrap,janseliger/bootstrap,frostbitten/bootstrap,frostbitten/bootstrap,lemuelbarango/bootstrap,creativewebjp/bootstrap,lipis/bootstrap,tomlutzenberger/bootstrap,tagliala/bootstrap,urbit/bootstrap,realcrowd/bootstrap,blockstack/blockstack-bootstrap,yuyokk/bootstrap,onenameio/rhythm-bootstrap,yuyokk/bootstrap,peterblazejewicz/bootstrap,janseliger/bootstrap,stanwmusic/bootstrap,xt0rted/bootstrap,creativewebjp/bootstrap,nice-fungal/bootstrap,Hemphill/bootstrap-docs,SweetProcess/bootstrap,fschumann1211/bootstrap,copperdesign/bootstrap,igoynawamreh/bootstrap,NCARB/bootstrap,yuyokk/bootstrap,IdanCo/bootstrap,tibo66/bootstrap,davethegr8/bootstrap,stanwmusic/bootstrap,joblocal/bootstrap,abvalentine/bootstrap,yuyokk/bootstrap,bardiharborow/bootstrap,stanwmusic/bootstrap,gijsbotje/bootstrap,n054/bootstrap,Delagen/bootstrap,mpharrigan/bootstrap,realcrowd/bootstrap,blockstack/blockstack-bootstrap,igoynawamreh/bootstrap,Hightrack/bootstrap,frostbitten/bootstrap,tomlutzenberger/bootstrap,supergibbs/bootstrap,hebbet/bootstrap,Hemphill/bootstrap-docs,Scoutski/bootstrap,sealocal/bootstrap,creativewebjp/bootstrap,afuno/bootstrap,johnajacob/bootstrap,bootstrapbrasil/bootstrap,hellonewman81/bs4,9-chirno/chirno,Delagen/bootstrap,Hemphill/bootstrap-docs,fschumann1211/bootstrap,wesamco/bootstrap-rtl,vitaligent/4,SweetProcess/bootstrap,JumpLinkNetwork/bootstrap-backward,onenameio/rhythm-bootstrap,sealocal/bootstrap,edanbarak/bootstrap,m5o/bootstrap,andresgalante/bootstrap,lipis/bootstrap,wesamco/bootstrap-rtl,lemuelbarango/bootstrap,sealocal/bootstrap,supergibbs/bootstrap,jipexu/bootstrap,davethegr8/bootstrap,copperdesign/bootstrap,hebbet/bootstrap,johnajacob/bootstrap,nice-fungal/bootstrap,david-schopf/bootstrap,vitaligent/4,abvalentine/bootstrap,tagliala/bootstrap,urbit/bootstrap,SweetProcess/bootstrap,abvalentine/bootstrap,johnajacob/bootstrap,andresgalante/bootstrap,david-schopf/bootstrap,afuno/bootstrap,david-schopf/bootstrap,bootstrapbrasil/bootstrap,joblocal/bootstrap,jipexu/bootstrap,davethegr8/bootstrap,kvlsrg/bootstrap,bootstrapbrasil/bootstrap,TheFridayInstitute/bootstrap,Scoutski/bootstrap,tibo66/bootstrap,mpharrigan/bootstrap,fschumann1211/bootstrap,realcrowd/bootstrap,inway/bootstrap,TheFridayInstitute/bootstrap,urbit/bootstrap,lipis/bootstrap,IdanCo/bootstrap,copperdesign/bootstrap,kvlsrg/bootstrap,zalog/bootstrap,vsn4ik/bootstrap,edanbarak/bootstrap,JumpLinkNetwork/bootstrap-backward,Lyricalz/bootstrap,fschumann1211/bootstrap,xt0rted/bootstrap,vsn4ik/bootstrap,tagliala/bootstrap,hellonewman81/bs4,seanwu99/bootstrap,JumpLinkNetwork/bootstrap-backward,afuno/bootstrap,igoynawamreh/bootstrap,JumpLinkNetwork/bootstrap-backward,gijsbotje/bootstrap,supergibbs/bootstrap,mpharrigan/bootstrap,GerHobbelt/bootstrap,Hemphill/bootstrap-docs,Scoutski/bootstrap,peterblazejewicz/bootstrap,NCARB/bootstrap,Hightrack/bootstrap,9-chirno/chirno,lipis/bootstrap,n054/bootstrap,vitaligent/4,bardiharborow/bootstrap,Delagen/bootstrap,Scoutski/bootstrap,realcrowd/bootstrap,twbs/bootstrap,slavanga/bootstrap,Lyricalz/bootstrap,gijsbotje/bootstrap,igoynawamreh/bootstrap,johnajacob/bootstrap,Hightrack/bootstrap,9-chirno/chirno,wesamco/bootstrap-rtl,peterblazejewicz/bootstrap,davethegr8/bootstrap,bardiharborow/bootstrap,wesamco/bootstrap-rtl,zalog/bootstrap,tibo66/bootstrap,inway/bootstrap,frostbitten/bootstrap,onenameio/rhythm-bootstrap,SweetProcess/bootstrap,Lyricalz/bootstrap,vsn4ik/bootstrap,bardiharborow/bootstrap,copperdesign/bootstrap,abvalentine/bootstrap,vsn4ik/bootstrap,nice-fungal/bootstrap,IdanCo/bootstrap,stanwmusic/bootstrap,GerHobbelt/bootstrap,IdanCo/bootstrap,blockstack/blockstack-bootstrap,TheFridayInstitute/bootstrap,GerHobbelt/bootstrap,gijsbotje/bootstrap,m5o/bootstrap,slavanga/bootstrap,andresgalante/bootstrap,xt0rted/bootstrap,slavanga/bootstrap,Lyricalz/bootstrap,twbs/bootstrap,janseliger/bootstrap,NCARB/bootstrap,xt0rted/bootstrap,tibo66/bootstrap,edanbarak/bootstrap,tjkohli/bootstrap,hebbet/bootstrap,lemuelbarango/bootstrap,edanbarak/bootstrap,supergibbs/bootstrap,sealocal/bootstrap,hellonewman81/bs4,tomlutzenberger/bootstrap,coliff/bootstrap,seanwu99/bootstrap