merged in changes from origin

Release version 1.7.1

Release version 1.7.0

added 'replace' statement to clearly communicate that this version of…

… the webdriver replaces the official one

Merge branch 'w3c' of github.com:mpierzchalski/php-webdriver into com…

…munity

Release version 1.6.0

Release version 1.5.0

Release version 1.4.1

Release version 1.4.0

Release version 1.3.0