Update the changelog for 1.3.1

Update changelog

Added the changelog for 1.2.0

Merge pull request minkphp#49 from aik099/session-start-exception-han…

…ding-fix

Handles uncaught exception from WebDriver library on session opening

Actualize Mink version constraint

Merge pull request minkphp#40 from stof/cleanup

Cleaned the phpdoc and fixed the catch block

Merge branch 'master' of github.com:Behat/MinkSelenium2Driver

Update README.md

Fix example composer.json typo

[ci skip]

fixed dependencies