fix 'endpoint' variable typo
Add coffeescript as devdependency, compile updates
Merge pull request #1 from roykolak/endpoint-fix

Endpoint fix
support for buffers as front and back pdfs

If a buffer is passed in as a value for front or back, skip creating
a readable stream. When the time comes to encode the form submission,
if any buffers are found, set the filename to be a pdf so that the
content type is correctly set for the stream.
Updated Readme with buffer example