WYSWYG to WYSIWYG.

readme.md

@@ -1,6 +1,6 @@
 ## Physics"R"us ##
 
-Physics"R"us is 2D rigid body physics engine and intergrated WYSWYG editor written in Javascript.
+Physics"R"us is 2D rigid body physics engine and intergrated WYSIWYG editor written in Javascript.
 
 Features
 --------------
@@ -11,7 +11,7 @@ Features
 - Supported shapes are circle, segment(thick rounded line segment), convex polygons
 - Rendering in HTML5 canvas
 - Web app look on mobile Safari
-- Integrated WYSWYG editor interface
+- Integrated WYSIWYG editor interface
 
 Todo
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