tweak travis build to actually test compiled Cython
tweak travis build to actually test compiled Cython

slonik-az/cython,mcanthony/cython,ABcDexter/cython,fperez/cython,mcanthony/cython,madjar/cython,encukou/cython,acrispin/cython,c-blake/cython,ABcDexter/cython,fabianrost84/cython,marscher/cython,acrispin/cython,mrGeen/cython,ABcDexter/cython,scoder/cython,acrispin/cython,JelleZijlstra/cython,achernet/cython,madjar/cython,mrGeen/cython,ChristopherHogan/cython,mcanthony/cython,dahebolangkuan/cython,encukou/cython,JelleZijlstra/cython,da-woods/cython,andreasvc/cython,scoder/cython,scoder/cython,slonik-az/cython,roxyboy/cython,madjar/cython,scoder/cython,dahebolangkuan/cython,mcanthony/cython,marscher/cython,dahebolangkuan/cython,marscher/cython,hhsprings/cython,ABcDexter/cython,cython/cython,roxyboy/cython,achernet/cython,fabianrost84/cython,cython/cython,hickford/cython,slonik-az/cython,fperez/cython,fabianrost84/cython,hhsprings/cython,da-woods/cython,madjar/cython,encukou/cython,madjar/cython,marscher/cython,ChristopherHogan/cython,encukou/cython,slonik-az/cython,ChristopherHogan/cython,dahebolangkuan/cython,JelleZijlstra/cython,fperez/cython,c-blake/cython,hickford/cython,da-woods/cython,c-blake/cython,c-blake/cython,dahebolangkuan/cython,c-blake/cython,hhsprings/cython,fperez/cython,acrispin/cython,hickford/cython,mcanthony/cython,JelleZijlstra/cython,achernet/cython,ABcDexter/cython,mrGeen/cython,andreasvc/cython,mrGeen/cython,roxyboy/cython,da-woods/cython,achernet/cython,hhsprings/cython,mrGeen/cython,cython/cython,fperez/cython,andreasvc/cython,roxyboy/cython,marscher/cython,fabianrost84/cython,andreasvc/cython,hickford/cython,hickford/cython,encukou/cython,fabianrost84/cython,hhsprings/cython,cython/cython,roxyboy/cython,slonik-az/cython,acrispin/cython,achernet/cython,JelleZijlstra/cython,andreasvc/cython