Add rule load method
Small fixes

Spelling mistake and data
Add test
Add new line at the end
Add new line at the end
Inherit class
Remove semicolon
Update branch
Change base class

Add some docs
Replace extends class

Add counstructor
Remove entity setup class
Replace extends class
Fix test for load method
Add translation for error
Merge pull request #16 from Pico88/task/add-load-rule-method

Task/Add rule load method