helper running a child process as a foreground process

 This Node.js module emulate simple control group in pure javacript.
 It runs a child process as foreground process redirecting output
 to stdout and exiting main process as soon as child exist.
 .
 This module could be used for implementating TAP test
 for Node.js.
 .
 TAP is a simple text-based interface between testing modules
 implemented in many popular languages.
 .
 Node.js is an event-based server-side JavaScript engine.