displayBinaryFile
Returns the content of a binary file as a response to the HTTP client. The file is treated as a sequence of bytes, no unicode conversion is applied.
General format
void displayBinaryFile( fileName, mimeType )   | 
Syntax rules
1.	fileName and mimeType are  alphanumeric data items.
General rules
1.	It’s good practice to provide a valid MIME type along with the file name.