create standalone executables from Python scripts

 cx_Freeze is an application which allows you to freeze Python code into
 executable files, in a way similar to how py2exe and py2app work.
 .
 There are three different ways how you can use cx_Freeze:
  * Use the included cxfreeze command which works well for simple scripts.
  * Create a distutils setup script which can be used for more complicated
    configurations or to retain the configuration for future use.
  * Work directly with the classes and modules used internally by cx_Freeze;
    this should be reserved for complicated scripts, extending or embedding.