Update .NET CHANGELOG for 4.0 beta2 release
Update .NET CHANGELOG for 4.0 beta2 release

HtmlUnit/selenium,SeleniumHQ/selenium,valfirst/selenium,joshmgrant/selenium,HtmlUnit/selenium,titusfortner/selenium,SeleniumHQ/selenium,titusfortner/selenium,HtmlUnit/selenium,titusfortner/selenium,joshmgrant/selenium,titusfortner/selenium,HtmlUnit/selenium,titusfortner/selenium,HtmlUnit/selenium,joshmgrant/selenium,valfirst/selenium,SeleniumHQ/selenium,SeleniumHQ/selenium,valfirst/selenium,titusfortner/selenium,joshmgrant/selenium,joshmgrant/selenium,valfirst/selenium,joshmgrant/selenium,SeleniumHQ/selenium,SeleniumHQ/selenium,titusfortner/selenium,HtmlUnit/selenium,titusfortner/selenium,SeleniumHQ/selenium,HtmlUnit/selenium,valfirst/selenium,valfirst/selenium,titusfortner/selenium,joshmgrant/selenium,valfirst/selenium,valfirst/selenium,SeleniumHQ/selenium,HtmlUnit/selenium,SeleniumHQ/selenium,HtmlUnit/selenium,valfirst/selenium,valfirst/selenium,titusfortner/selenium,joshmgrant/selenium,HtmlUnit/selenium,titusfortner/selenium,joshmgrant/selenium,valfirst/selenium,joshmgrant/selenium,SeleniumHQ/selenium,SeleniumHQ/selenium,joshmgrant/selenium