update: readme for blur

Author: advnpzn

README.md

@@ -2,22 +2,23 @@
 
 Play with Gaussian filter!
 <p align="left">
-<img src="res/normal.png" alt="normal" width="300" />
-<img src="res/grayscale.png" alt="grayscale" width="300" />
+<img src="res/normal.png" alt="normal" width="210" />
+<img src="res/grayscale.png" alt="grayscale" width="210" />
+<img src="res/blur.png" alt="grayscale" width="210" />
 </p>
 
-The actual Gaussian Filter is not implemented yet.
-
-So far, what you can do,
-
-- GrayScale
-
 ## Usage
 
 ```bash
-./gaussfilt --help
+./gaussfilt --input <path/to/image> --gui
 ```
 
+### TO
+
+- CLI implementation
+- Batch processing
+- Performance Improvement
+
 ## Building
 
 You need vcpkg. Please install it and set the `VCPKG_ROOT` path.