Added Visible Status Bar in iPhone Webapp

Added meta tag "apple-mobile-web-app-status-bar-style" to enable status bar in the full screen application mode in iPhone
Change meter reading in speed limiter button

Thanks to @AhmedOsama for giving the original commit.
Little modified version. Using meter reading as an indicator of speed limit instead of color.
Red color seems not matching with the remaining. So changed the original commit by AhmedOsama
Merge pull request #106 from Mariappan/master

Added Visible Status Bar in iPhone Webapp