title: in Google Apps Script, how to create a file by bytes?
body: <p>Related to my earlier question <a href="https://stackoverflow.com/questions/32707715/how-to-reconstruct-a-blob-for-an-image-from-a-binary-string-client-side-hidden">How to reconstruct a blob for an image from a binary string (client side hidden form field) in Google Apps Script</a>, I digged further and realize my critical question is how to create a file in Google Drive if I know exactly the value for each byte of the file? </p>
  
  <p>The DriveApp.createFile function accepts blobs, but I am not sure where to start if I want to create a file with each byte as 0x89,0xFF,0x99,... ? </p>