Added note about w3m-img

Readme.md

@@ -24,6 +24,7 @@ These are the script's required dependencies
 These are the script's optional dependencies:
 
 -  Displaying Images: w3m
+    - You may also need w3m-img
 -  Image Cropping: ImageMagick
 -  Display Wallpaper: feh
 -  Current Song: mpc

fetch.sh

@@ -2,7 +2,7 @@
 # Fetch info about your system
 #
 # Optional Dependencies: (You'll lose these features without them)
-#   Displaying Images: w3m
+#   Displaying Images: w3m + w3m-img
 #   Image Cropping: ImageMagick
 #   Wallpaper Display: feh
 #   Current Song: mpc