Enable finding element or elements by type array

Add _elementOrElementsByType

Usage Example:

 find_element :uiautomation, %Q($.mainWindow()._elementOrElementsByType(["UIAStaticText"], true, true))
find_elements :uiautomation, %Q($.mainWindow()._elementOrElementsByType(["UIAStaticText"], false, true))
Merge pull request #33 from bootstraponline/_elementOrElementsByType

Enable finding element or elements by type array