Update README usage details

README.md

@@ -21,6 +21,7 @@ Command line asset manipulation, set up a pipeline once and run it against all o
 Usage: crunch <COMMAND>
 
 Commands:
+  atlas     Given a set of image files, create a single atlas image and metadata file containing all of the image data
   rotate    Rotate an image clockwise by the given degree
   extrude   Take each tile in an image and expand its borders by a given amount. Optionally fill with nearby pixels instead of empty space
   palette   Create a palette file containing every distinct colour from the input image
@@ -30,6 +31,8 @@ Commands:
   pipeline  Execute a predefined pipeline
   reduce    Limit the number of colours by quantity or threshold
   split     Take a spritesheet and split into individual sprites, skipping empty space
+  extract   Extract individual, non-square sprites from a given spritesheet
+  info      Extract Information About An Image into a JSON file
   help      Print this message or the help of the given subcommand(s)
 
 Options: