added ClickDialogBox
added EnterTextInDialogBox and updated ClickDialogBox to have default pre and post waits
added CancelDialogBox method
Merge pull request #24 from adeel41/ConfirmationBoxes

fixed #23 by adding methods to click, cancel, and enter text in dialog boxes
Fixed issue with DialogBoxIsNotActive
changed XenonElementsFinder to find elements correctly when multiple AttributeIs and TextIs methods are used together which fixed #25
merged nuspec files
Added Clear Method
Merge pull request #9 from LiquidThinking/master

pull changes from origin