Added statusbar plugin.

This controls whether the statusbar overlays the webview in iOS 7, as well as allows changing of the statusbar styles.
Incorrect js for statusbar plugin
Added statusbar background, including API to change its background color
Added ability to set statusbar background color by hex string.
Added statusbar preferences to plugin.xml

Removed Info.plist section in plugin xml due to crash: https://issues.apache.org/jira/browse/CB-5012
Removed StatusBarStyle. iOS users should just use the UIStatusBarStyle key in Info.plist
Add <info> section to the statusbar plugin.xml
Match statusbar style to default background color of #000000
Add StatusBar plugin docs.
Fixed statusbar background view not auto-resizing on landscape.
Removed statusBar prefix from StatusBar plugin API
Implement StatusBar.isVisible
Added show() and hide() to StatusBar API
Updated StatusBar docs for show and hide API
Increment StatusBar plugin version to 0.1.1
StatusBar - remove dependence of UIViewControllerBasedStatusBarAppearance Info.plist key
Updated StatusBar plugin version to 0.1.2
Making statusbar plugin a root.