Add readme

README.md

@@ -0,0 +1,25 @@
+## SangNom2 ##
+
+Reimplementation of the old MarcFD's SangNom filter. Output is not completely but mostly identical.
+
+### What's difference ###
+* It's open source
+* Correct borders processing
+* Additinal colorspace support
+* Requries SSE2
+
+Performance right now is mostly identical to the old version despite this plugin using SSE2. Additional improvements are planned.
+
+### Y8 ###
+The most important difference for now is Y8 support in AviSynth 2.6. This enables much faster antialiasing (especially when used with [FTurn](https://github.com/tp7/fturn) plugin) without any chroma processing.
+```
+function maa(clip input, int "mask") {
+    mask = input.mt_edge("sobel",7,7,5,5).mt_inflate()
+    aa_clip = input.ConvertToY8().Spline36Resize(width(input)*2,height(input)*2).FTurnLeft() \
+    			   .SangNom2().FTurnRight().SangNom2().Spline36Resize(width(input),height(input))
+    return mt_merge(input,aa_clip,mask,u=2,v=2) 
+}
+```
+
+### License ###
+This project is licensed under the [MIT license](http://opensource.org/licenses/MIT). Binaries are [GPL v2](http://www.gnu.org/licenses/gpl-2.0.html) because if I understand licensing stuff right (please tell me if I don't) they must be.