Modify/Hide Status Bar at the top for iOS 7 or above

To change Status Bar style, say, change fonts from black to white, modify tiapp.xml to add the following:

<iphone>
<plist>
   <dict>
          <key>UIStatusBarStyle</key>
          <string>UIStatusBarStyleLightContent</string>
   </dict>
</plist>
</iphone>

To hide, add the following to tiapp.xml:
<statusbar-hidden>true</statusbar-hidden>
<fullscreen>true</fullscreen>