README.md in image_optim_bin-0.0.4 vs README.md in image_optim_bin-0.0.5

- old
+ new

@@ -28,9 +28,10 @@
 - `PNGOUT_BIN`
 - `ADVPNG_BIN`
 - `ADVDEF_BIN`
 - `ADVMNG_BIN`
 - `ADVZIP_BIN`
+- `GIFSICLE_BIN`
 
 ## Contributing
 
 1. Fork it
 2. Create your feature branch (`git checkout -b my-new-feature`)