Update README.md

Author: jshermeyer

README.md

@@ -5,6 +5,6 @@ Super-Resolution Utilities for managing large satellite images
 
 **AddGeoReferencing.py** - Add georeferencing metadata back to an image where it has been stripped
 
-**tile.py** - Code to tile images into smaller sizes for compatible input with deep learning algorithms
+**tile_im.py** - Code to tile images into smaller sizes for compatible input with deep learning algorithms
 
 **stitch.py** - Stitch images back together after super-resolution