Fix typo in travis YML.
Fix typo in travis YML.

toni07/vexflow,Huji/vexflow,bsouthward/vexflow,Chipairon/vexflow,Tails/vexflow,LarryKu/vexflow,alexmao86/vexflow,Petezah/vexflow,aaronmars/vexflow,winning1120xx/vexflow,Chipairon/vexflow,alexmao86/vexflow,Charlie-Wellesley/vexflow,LarryKu/vexflow,natedsaint/vexflow,redreamality/vexflow,cpill0789/vexflow,gaborveszpremi/vexflow,Charlie-Wellesley/vexflow,mwicat/vexflow,mcanthony/vexflow,Petezah/vexflow,zachledoux/vexflow,Silverwolf90/vexflow,rukor/vexflow,mcanthony/vexflow,aaronmars/vexflow,toni07/vexflow,jbernie2/vexflow,dhruvrajan/vexflow,zhhz/vexflow,spencerhitch/vexflow_extended,Kosar79/vexflow,zachledoux/vexflow,mwicat/vexflow,pinxue/vexflow,ssoRL/vexflow,Kosar79/vexflow,Huji/vexflow,JanvanCasteren/vexflow,springzh/vexflow,rukor/vexflow,springzh/vexflow,shuanzi/vexflow,DigitalCoder/vexflow,bsouthward/vexflow,Chipairon/vexflow,pinxue/vexflow,Charlie-Wellesley/vexflow,burnnat/vexflow,jbernie2/vexflow,gaborveszpremi/vexflow,JasonLil/vexflow,Fabrico/vexflow,ssoRL/vexflow,Huji/vexflow,burnnat/vexflow,redreamality/vexflow,IcculusC/vexflow,natedsaint/vexflow,voidest1/vexflow,vikeen/vexflow,Mdonmounts/vexflow,aerhard/vexflow,johndpope/vexflow,RSid/vexflow,voidest1/vexflow,mwicat/vexflow,Silverwolf90/vexflow,RSid/vexflow,mcanthony/vexflow,IcculusC/vexflow,vikeen/vexflow,fgeorgy/vexflow,dfcreative/vexflow,Kosar79/vexflow,bsouthward/vexflow,redreamality/vexflow,pinxue/vexflow,Petezah/vexflow,wander2001/vexflow,aerhard/vexflow,ringw/vexflow,zex713/vexflow,Fabrico/vexflow,cpill0789/vexflow,IcculusC/vexflow,springzh/vexflow,Tails/vexflow,avorio/vexflow,spencerhitch/vexflow_extended,Daremyth/vexflow,Silverwolf90/vexflow,vmoll/vexflow,Mdonmounts/vexflow,shuanzi/vexflow,jmahmud/vexflow,JasonLil/vexflow,ecompositor/vexflow,wander2001/vexflow,JasonLil/vexflow,DigitalCoder/vexflow,spencerhitch/vexflow_extended,dfcreative/vexflow,zex713/vexflow,wander2001/vexflow,Tails/vexflow,Mdonmounts/vexflow,JanvanCasteren/vexflow,rukor/vexflow,johndpope/vexflow,JanvanCasteren/vexflow,LarryKu/vexflow,gaborveszpremi/vexflow,DigitalCoder/vexflow,aerhard/vexflow,jmahmud/vexflow,ecompositor/vexflow,voidest1/vexflow,toni07/vexflow,vmoll/vexflow,toni07/vexflow,mariushe/vexflow,aaronmars/vexflow,fgeorgy/vexflow,ecompositor/vexflow,winning1120xx/vexflow,avorio/vexflow,vmoll/vexflow,natedsaint/vexflow,zex713/vexflow,winning1120xx/vexflow,avorio/vexflow,dhruvrajan/vexflow,mariushe/vexflow,dfcreative/vexflow,ssoRL/vexflow,Fabrico/vexflow,fgeorgy/vexflow,Daremyth/vexflow,jmahmud/vexflow,alexmao86/vexflow,burnnat/vexflow,cpill0789/vexflow,dhruvrajan/vexflow,Daremyth/vexflow,zhhz/vexflow