Convert gen_app_yaml.py to optparse
This allows for example the -f flag to be specified as the second
argument. Also add a '-i|--interactive' flag which asks for the
application name interactively.
/**
* @param {Object} object
* @return {string}
*/
function valueOf(object) {}
/**
* @param {Object} object
* @return {string}
*/
function toString(object) {}
/**
* @param {Object} object
* @return {string}
*/
function toSource(object) {}
/**
* @param {Object} object
* @return {string}
*/
function constructor(object) {}