Image is not showing up for tab bar item : <p>I uploaded an image to assets folder and assigned the image to 1x, 2x and 3x. 
selected the table view controller of the respective tab bar item -> selected the Attributes -> assigned the image to the image field in the Bar Items section. </p>

<p>After running the application a Blue Square box is showing up on selection and Grayed out square box is showing up on selection of a different bar item. </p>

<p>Where am I going wrong?</p>
