Adds text under the mock up.
                Adds a custom image under the mock up.
Image instructions: 
Save a .png in Mocko/assets/watermark.png.
Image size should be 1140 W x 285 H
If an image isn't already saved when you tap the image button above, an example image will be downloaded for you. 
             
            
                Colors the text white.
                Colors the text black.
             
            
            Removes watermark/name-drop.