Fix demo paths
Fix demo paths

Blob.min.js does not exist, change to Blob.js

Replace raw.github.com w/ cdn.rawgit.com -- fixed "strict MIME type checking is enabled" as per: 

http://stackoverflow.com/questions/17341122/link-and-execute-external-javascript-file-hosted-on-github
avct/FileSaver.js,Drooids/FileSaver.js,tommymckinley/FileSaver.js,rochadsouza/FileSaver.js,gandhikeyur/FileSaver.js,alferov/FileSaver.js,LeeHyungGeun/FileSaver.js,LeeHyungGeun/FileSaver.js,tmpvar/browser-filesaver,gandhikeyur/FileSaver.js,johan--/FileSaver.js,sapics/FileSaver.js,chosh31/FileSaver.js,SidPresse/FileSaver.js,Hypercubed/FileSaver.js,avct/FileSaver.js,RealMassive/FileSaver.js,luisbrito/FileSaver.js,tmpvar/browser-filesaver,RealMassive/FileSaver.js,vicapow/FileSaver.js,billcowan/FileSaver.js,Teleborder/FileSaver.js,theDakotaCorbin/FileSaver.js,tommymckinley/FileSaver.js,SidPresse/FileSaver.js,rochadsouza/FileSaver.js,alferov/FileSaver.js,sapics/FileSaver.js,billcowan/FileSaver.js,husnixs/FileSaver.js,MapleWorld/FileSaver.js,chosh31/FileSaver.js,doctorbeat/FileSaver.js,johan--/FileSaver.js,Teleborder/FileSaver.js,Drooids/FileSaver.js,Hypercubed/FileSaver.js,ZodiacProject/FileSaver.js,vicapow/FileSaver.js,theDakotaCorbin/FileSaver.js,doctorbeat/FileSaver.js,luisbrito/FileSaver.js,ZodiacProject/FileSaver.js,MapleWorld/FileSaver.js,husnixs/FileSaver.js,spalger/FileSaver.js