Enhancements to the commonJS command line API

[fred-wang]

Currently, the commonJS API only exposes the getTeXSource, toMathMLString and toMathML functions. When commonJS is more standardized it would be useful to extend the API. Concrete use cases:

• allow to use TeXZilla as a stream filter.
• allow to run TeXZilla as a Web service.

http://wiki.commonjs.org/wiki/System/1.0
http://wiki.commonjs.org/wiki/JSGI

[fred-wang]

I've added a basic command line interface.

slimerjs TeXZilla.js parser aTeX [aDisplay] [aRTL] [aThrowExceptionOnError]
  Print TeXZilla.toMathMLString(aTeX, aDisplay, aRTL, aThrowExceptionOnError)
  The interpretation of arguments and the default values are the same.

slimerjs TeXZilla.js webserver [port]
  TODO

cat input | slimerjs TeXZilla.js stream > output
  TODO

[fred-wang]

The interface is now:

  commonjs TeXZilla.js [help]
    Print this help message.

  commonjs TeXZilla.js parser aTeX [aDisplay] [aRTL] [aThrowExceptionOnError]
    Print TeXZilla.toMathMLString(aTeX, aDisplay, aRTL, aThrowExceptionOnError)
    The interpretation of arguments and the default values are the same.

  commonjs TeXZilla.js webserver [port]
    Start a Web server on the specified port (default:3141)
    See the TeXZilla wiki for details.

  cat input | commonjs TeXZilla.js streamfilter > output
    Make TeXZilla behaves as a stream filter. The TeX fragments are
    converted into MathML.

    where commonjs is slimerjs, nodejs or phantomjs.

However, I didn't find how to access the stdin with slimerJS so the streamfilter mode does not work (this has been reported to laurentj/slimerjs#188).

[fred-wang]

The command line is now implemented. I'm moving the issue with slimerjs to #35