remove another reference to the old distutils build (in quickstart!) and clarify the description of the Sage notebook a bit
remove another reference to the old distutils build (in quickstart!) and clarify the description of the Sage notebook a bit

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