"Hello World" plugin

 Simple "Hello World" plugin for ImpressPages.

Shows developers how to create minimal "Hello world" plugin for ImpressPages. Includes site, public and admin controllers.

1. Upload HelloWorld directory to your website's Plugin directory.
2. Login to the administration area.
3. Go to Plugins tab, locate Hello world plugin and click activate button.

•  To check site plugin: type in your browser's address bar http://www.example.com/?sa=HelloWorld.sayHello
•  To check public plugin: type in your browser's address bar http://www.example.com/?pa=HelloWorld.sayHello
•  To check admin plugin: login to the adminsitration area. Type in your browser's address bar http://www.example.com/?aa=HelloWorld.sayHello
•  As a result, block area displays a text Hello World!