Update README.md

Show-case in example.rkt

Clean up. Move process into sep file. Move syntax tests into sep file.

piping works as long as ports are file-stream-ports. String port still fails. fork/pipe needs total rewrite.

pipe with spliced in scheme code seem to work

Pipes now work for external binaries. Streamline testing a bit.

Clearer testing with . exec-path seems to work.

One process (exec-epf ((ls -a))) spawned. fork/pipe and exec-path almost work.

Transcribe and execute simple Unix utils. First stroke - proof of consept rather than production code

Slightly improved testing and added test-cases

Better debug-msgs using stock expand/hide and eval-syntax

Outline process interface as in scsh

Transcribe scsh surface syntax into base-syntax: follow syntax.scm in scsh

First commit