Mention Python development headers in README instructions.
Mention Python development headers in README instructions.

darshanthaker/nupic,go-bears/nupic,fergalbyrne/nupic,BeiLuoShiMen/nupic,rayNymous/nupic,passiweinberger/nupic,EricSB/nupic,chanceraine/nupic,numenta/nupic,vamsirajendra/nupic,vitaly-krugl/nupic,chanceraine/nupic,blueburningcoder/nupic,BoltzmannBrain/nupic,chen0031/nupic,akhilaananthram/nupic,passiweinberger/nupic,pap/nupic,scottpurdy/nupic,lscheinkman/nupic,brev/nupic,arhik/nupic,pulinagrawal/nupic,alfonsokim/nupic,virneo/nupic,jcasner/nupic,breznak/nupic,rcrowder/nupic,pap/nupic,go-bears/nupic,numenta-ci/nupic,sambitgaan/nupic,GeraldLoeffler/nupic,rcrowder/nupic,jcasner/nupic,chen0031/nupic,alfonsokim/nupic,alfonsokim/nupic,fergalbyrne/nupic,EricSB/nupic,eranchetz/nupic,chanceraine/nupic,darshanthaker/nupic,blueburningcoder/nupic,rhyolight/nupic,metaml/nupic,metaml/nupic,mcanthony/nupic,eranchetz/nupic,breznak/nupic,arhik/nupic,loretoparisi/nupic,markneville/nupic,wanghaven/nupic,SaganBolliger/nupic,ywcui1990/nupic,fergalbyrne/nupic,sambitgaan/nupic,darshanthaker/nupic,elkingtonmcb/nupic,ben-hopps/nupic,BoltzmannBrain/nupic,neuroidss/nupic,loretoparisi/nupic,wanghaven/nupic,subutai/nupic,allanino/nupic,badlogicmanpreet/nupic,ben-hopps/nupic,marionleborgne/nupic,breznak/nupic,glorizen/nupic,loretoparisi/nupic,subutai/nupic,ben-hopps/nupic,vamsirajendra/nupic,scottpurdy/nupic,pulinagrawal/nupic,brev/nupic,rhyolight/nupic,cngo-github/nupic,neuroidss/nupic,SaganBolliger/nupic,BeiLuoShiMen/nupic,rayNymous/nupic,sambitgaan/nupic,runt18/nupic,go-bears/nupic,metaml/nupic,numenta/nupic,vitaly-krugl/nupic,badlogicmanpreet/nupic,cngo-github/nupic,eranchetz/nupic,ywcui1990/nupic,cogmission/nupic,arhik/nupic,pap/nupic,numenta/nupic,wanghaven/nupic,elkingtonmcb/nupic,rhyolight/nupic,marionleborgne/nupic,blueburningcoder/nupic,virneo/nupic,pulinagrawal/nupic,GeraldLoeffler/nupic,allanino/nupic,cngo-github/nupic,elkingtonmcb/nupic,badlogicmanpreet/nupic,EricSB/nupic,BoltzmannBrain/nupic,rayNymous/nupic,ywcui1990/nupic,numenta-ci/nupic,numenta-ci/nupic,glorizen/nupic,akhilaananthram/nupic,rcrowder/nupic,BeiLuoShiMen/nupic,virneo/nupic,markneville/nupic,jcasner/nupic,chen0031/nupic,cogmission/nupic,glorizen/nupic,SaganBolliger/nupic,neuroidss/nupic,mcanthony/nupic,GeraldLoeffler/nupic,subutai/nupic,lscheinkman/nupic,brev/nupic,mcanthony/nupic,marionleborgne/nupic,vamsirajendra/nupic,cogmission/nupic,akhilaananthram/nupic,passiweinberger/nupic,markneville/nupic,runt18/nupic,allanino/nupic,scottpurdy/nupic,runt18/nupic,vitaly-krugl/nupic,lscheinkman/nupic