lib/nixt/world.js
function World(env, cwd) {
  this.env = env || clone(process.env);
  this.cwd = cwd;
  this.timeout = null;
}
function World(env, cwd) {
  this.env = env || clone(process.env);
  this.cwd = cwd;
  this.timeout = null;
}
function World ( env , cwd ) { this . env = env || clone ( process . env ) ; this . cwd = cwd ; this . timeout = null ; }
Contain the environment variables and the
current working directory for commands.

@param {Object} env
@param {String} cwd
@constructor
Contain the environment variables and the current working directory for commands .