Updated README.txt
Signed-off-by: John McCutchan <john@johnmccutchan.com>
diff --git a/README.txt b/README.txt
index fc10799..1bb3d74 100644
--- a/README.txt
+++ b/README.txt
@@ -4,7 +4,15 @@
A Vector Math library for game programming written in Dart.
-Supports GLSL like syntax, for example:
+DartVectorMath is largely compatible with GLSL.
+
+(Constructor syntax is only incompatibility that wouldn't be classified as a bug.)
+
+DartVectorMath offers all GLSL classes and utility functions.
+
+DartVectorMath offers more functionality than GLSL including a quaternion type.
+
+DartVectorMath GLSL getter and setter syntax, for example:
vec3 x = new vec3(); // Zero vector
vec4 y = new vec4(4.0); // Vector with 4.0 in all lanes
