Added first version of the IonCube encoder extension task

This allows you to encrypt a project prior to pushing it
to a server.
You can download a trial version of IonCube PHP Encoder from :
http://www.actweb.info/ioncube.html
You can set the configuration info for IonCube from :
1. enviroment.yml
2. Seperate IonCube config file
3. Default options stored within the script

An example eviroment.yml file is included at the end of the script.
The IonCube config options can be found within the IonCube manual.