Update README

README.md

@@ -1,7 +1,7 @@
 Inochi2D Math
 ====
 
-inmath is a fork of the [gl3n](https://github.com/Dav1dde/gl3n) meant for use within Inochi2D, containing modifications specific to Inochi2D.  
+inmath is a fork of [gl3n](https://github.com/Dav1dde/gl3n) meant for use within Inochi2D, containing modifications specific to Inochi2D.  
 inmath provides all the math you need to work with OpenGL. Currently inmath supports:
 
 * linear algebra
@@ -21,6 +21,13 @@ inmath provides all the math you need to work with OpenGL. Currently inmath supp
 * nearly all GLSL defined functions (according to spec 4.1)
 * the power of D, e.g. dynamic swizzling, templated types (vectors, matrices, quaternions), impressive constructors and more!
 
+inmath is slightly different from gl3n in the following ways
+* No unexpected side effects
+  * No unexpected casts
+  * Vector multiplication is _not_ dot product.
+    * Multiplying vectors does pair-wise multiplication instead.
+
+
 License
 =======