updating readme

Author: alphasierra

README.md

@@ -1,7 +1,19 @@
 # OpenCT
-A compilation of code libraries and tools for display testing and colour science.
+A compilation of code libraries and tools for display testing and colour science. Under development.
 
 
 ## Contents
-- Coordinate conversions
-- Display test pattern generator
+- Coordinate conversions and colour math libraries
+- Display test pattern generator
+- CIE colour chart generator
+
+###Test Pattern Generator
+Generates various test patterns dynamically scaled to fit any display.
+
+Patterns:
+- Screen alignment patterns
+- Black -> R/G/B -> White
+- Black -> R/G/B/W Gradients
+- Checkerboard patterns
+- Crosstalk patterns
+-