update readme

README.md

@@ -2,7 +2,7 @@
 Easily resize images
 
 ## Usage:
-`Usage: ./resizer <image_path> <size> ...`
+`Usage: ./resizer <image_paths> <sizes> ...`
 
 Sizes can be a single number, to resize into a square:
 `./resizer <image_path> 1024 ...`
@@ -14,6 +14,11 @@ Individual sizes are separated by a space.
 
 Add as many sizes as you want, mixing between both square & exact measurements.
 
+Specify as many file paths as you want, including by using wildcards:
+`./resizer images/* 1024x1024`
+
+`./resizer img1.png img2.png 512x512 1024x1024`
+
 Supports JPEG, PNG, and GIF.
 
 Results will be stored in the same directory as the input file, with the size at the end: