code: function Printr(options) {
    options = options || {};
    options.out = options.out || process.stdout;
    options.err = options.err || process.stderr;
    options.prefix = options.prefix || '';
    this.options = options;
  }
docs: Printr - tiny print util.
  
  Options:
  - `out`     out stream, default: process.stdout
  - `err`     err stream, default: process.stderr
  - `prefix`  prefix to append for `Message#print`, default: ''
  
  @param {Object} options
  @constructor