Added support of the right mouse Click.php

Usage:

    $input = $this->byId('input');
    $this->moveto($input);
    $this->click(PHPUnit_Extensions_Selenium2TestCase_SessionCommand_Click::RIGHT);
Merge pull request #220 from zerkms/right-click

Right click support
resolves bug where waitUntil cleared implicitWait

includes test
Experimenting #217: no loading of browser URL before start of the test
Closing #221: avoiding old VERSION constants
Fixing BC break
Merge pull request #224 from andyfowler/waituntil-implicit-fix

waitUntil is resetting implicitWait