Update lib/linguist/languages.yml
Update lib/linguist/languages.yml

Add DOT language: http://www.graphviz.org/content/dot-language
jjatria/linguist,stanhu/linguist,0a-/linguist,meunierfrederic/octocatlinguist,ya7lelkom/linguist,whitj00/linguist,kr/linguist,martynbm/linguist,davidzchen/linguist,erkyrath/linguist,scttnlsn/linguist,CegepVictoriaville/linguist,manveru/linguist,sagar290/linguist,bluebear94/linguist,pcantrell/linguist,github/linguist,sebgod/linguist,mattn/linguist,manveru/linguist,CoderXpert/linguist,yscho/linguist,yyx990803/linguist,ilyes14/linguist,ammaraskar/linguist,FStarLang/linguist,ppaulweber/github-linguist,kr/linguist,BerkeleyTrue/linguist,steventhanna/linguist,erkyrath/linguist,JJ/linguist,erkyrath/linguist,assimovt/ling-ist,sideci-sample/sideci-sample-linguist,bluebear94/linguist,yyx990803/linguist,cybernet14/linguist,a0viedo/linguist,alvarotrigo/linguist,MahmoudFayed/linguist,mcandre/linguist,github/linguist,MadcapJake/linguist,whitj00/linguist,PsichiX/linguist,ya7lelkom/linguist,douglas-larocca/linguist,pchaigno/linguist,scttnlsn/linguist,alitalia/linguist,blakeembrey/linguist,mwpastore/linguist,FStarLang/linguist,meunierfrederic/octocatlinguist,Mx7f/linguist,thejameskyle/linguist,jrnold/linguist,hcatlin/linguist,R4PaSs/linguist,kyoungrok0517/linguist,chiranjeevjain/linguist,MahmoudFayed/linguist,stanhu/linguist,tschf/linguist,hcutler/linguist,pchaigno/linguist,matt40k/linguist,JJ/linguist,ChaiScript/linguist,CoderXpert/linguist,mwpastore/linguist,maxogden/linguist,adamkaplan/linguist,c-lipka/linguist,iblech/linguist,Rockyspade/linguist,mcandre/linguist,a0viedo/linguist,Mailaender/linguist,davidzchen/linguist,gitlabhq/linguist,cybernet14/linguist,mattn/linguist,iblech/linguist,douglas-larocca/linguist,georgesuperman/linguist,assimovt/ling-ist,pcantrell/linguist,R4PaSs/linguist,ammaraskar/linguist,matt40k/linguist,phpsgi/linguist,sebgod/linguist,erkyrath/linguist,marcojonker/test,ppaulweber/github-linguist,jtbandes/linguist,Mx7f/linguist,jrnold/linguist,wcandillon/linguist,stanhu/linguist,cokeboL/linguist,meunierfrederic/octocatlinguist,sebgod/linguist,JJ/linguist,kyoungrok0517/linguist,chiranjeevjain/linguist,0a-/linguist,MostAwesomeDude/linguist,yyx990803/linguist,alvarotrigo/linguist,jtbandes/linguist,SRI-CSL/linguist,jjatria/linguist,marcojonker/test,martynbm/linguist,blakeembrey/linguist,anhongyue/test222,hcatlin/linguist,CegepVictoriaville/linguist,ilyes14/linguist,thejameskyle/linguist,MadcapJake/linguist,Ocramius/linguist,hcutler/linguist,georgesuperman/linguist,sebgod/linguist,nburkley/linguist,c-lipka/linguist,SRI-CSL/linguist,github/linguist,JJ/linguist,Rockyspade/linguist,stanhu/linguist,seanders/linguist,anhongyue/test222,tschf/linguist,BerkeleyTrue/linguist,yyx990803/linguist,alitalia/linguist,phpsgi/linguist,igat259/linguist,christop/linguist,osorgin/linguist,github/linguist,christop/linguist,yscho/linguist,sagar290/linguist,MostAwesomeDude/linguist,sideci-sample/sideci-sample-linguist,adamkaplan/linguist,seanders/linguist,wcandillon/linguist,osorgin/linguist,PsichiX/linguist,nburkley/linguist,pchaigno/linguist,pchaigno/linguist,cokeboL/linguist,steventhanna/linguist