updated the methodology to find the top view controller to support multiple types of root view controllers
removed unused variable
demo changes to support reporting of time spent in proximities and zone
updated content webview to properly resize on orientation changes
centered the content view close button
properly sized the web content view based on the currently displayed view size/orientation
updated the topViewController logic to work properly when a modal view is the top most view controller
reverted commits not intended for pull request
Merge pull request #2 from abathingchris/feature_content-view-top

Support multiple type of root view controllers for content action