Changed example test URL
Updated param
Renamed $se in PHPUnit_Extensions_Selenium2PageObject to $test

Adjusted relevant code
Removed configureMappings() in PHPUnit_Extensions_Selenium2PageObject
Improved DocBlock of PHPUnit_Extensions_Selenium2PageObject::assertPreConditions()
Improved DocBlock
Fixed Typo
Removed *AllByMap() functionality
Added short desc in DocBlock
Added DocBlock
Fixed outdated (Selenium 1x) command in example test
Added a file header DocBlock to all PHP files
Improved DocBlock
Added a .editorconfig file
Added travis.yml