Merge pull request #158 from mwhelan/master

Updated Selenium WebDriver and Selenium Support from 2.37 to latest 2.42.
Added Textbox.Text property
Added tests to Textbox.Text property
Merge pull request #160 from StefanoGermani/master

Adding Text property to Textbox
Allows to inject environment vars into IISExpress process
Merge pull request #162 from TestStack/process-level-env-variables

Allows to inject environment vars into IISExpress process
Adding ability to dump DOM out like a screenshot
Merge pull request #168 from aaronpowell/master

Adding ability to dump DOM out like a screenshot