Add input group example with btns on both sides for completeness+testing
Add input group example with btns on both sides for completeness+testing

[skip sauce]

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