Add Gen 3 sprites

src/README.md

@@ -3,17 +3,29 @@ Documentation for flags used.
 
 # sprites/gen1
 
+PNG original dimensions 40x40, 48x48, or 56x56 for fronts; 32x32 for backs
 - `-b` Back sprite
 - `-g` Game it is from, can be `rb`, `rg`, `rgb`, or `y`
 
 # sprites/gen2
 
+PNG original dimensions 40x40, 48x48, or 56x56 for fronts; 48x48 for backs
 - `-b` Back sprite
 - `-s` Shiny
 - `-g` Game it is from, can be `c`
 
+# sprites/gen3
+
+PNG original dimensions 64x64
+- `-b` Back sprite
+- `-s` Shiny
+- `-g` Game it is from, can be `r`, `f`, `l`, `e`, `re`, `fe`, or `rfe`
+  - `r` is Ruby and Sapphire, `f` is Fire Red, `l` is Leaf Green, and `e` is Emerald
+  - Except for Deoxys Defense, all Fire Red sprites are also used in Leaf Green
+
 # sprites/gen4
 
+PNG original dimensions 80x80
 - `-b` Back sprite
 - `-f` Female
 - `-s` Shiny