Make generic for calling from anywhere

[bfirsh]

Make generic for calling from anywhere

[bfirsh]

Related to this, an idea that @justincormack has been working on is being able to also use Funker functions with stdin/out so you can test them on the command-line.

Something like:

$ docker run -i add
{"x": 1, "y": 2}^D
3

or, perhaps:

$ docker run -i add '{"x": 1, "y": 2}'
3

[deitch]

Now that I like. It keeps with the Unix philosophy of text streams, and makes it real easy to compose manually.