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
Merge pull request #112 from mudcube/patch-1

Fix demo paths