Go http.Handler that mixes many files into one request.

If you have a directory containing many JavaScript files:

files/
  js/
    one.js
    two.js
    three.js
  lib/
    four.js

You can use mix.Handler to specify filepath patterns to serve them all in a single request.

http.Handle("/mix/all.js", mix.Handler("./files/js/*.js", "./files/lib/*.js"))

• The Content-Type will be taken from the request path.