added dependency requirements to readme

README.md

@@ -12,3 +12,9 @@ Three.d is high performance 3D graphics engine written from scratch in the D Pro
 * Virtual Textures (Megatextures)
 * Async Buffer Transfers [[1]](http://www.seas.upenn.edu/~pcozzi/OpenGLInsights/OpenGLInsights-AsynchronousBufferTransfers.pdf)
 
+## Dependencies
+* glfw3
+* Assimp
+* FreeImage
+* freetype
+* (AntTweakBar)

dub.json

@@ -1,7 +1,7 @@
 {
 	"name": "three-d",
 	"license": "LGPLv3",
-	"description": "A 3D Graphics Engine.",
+	"description": "A high performance 3D Graphics Engine.",
 	"copyright": "Copyright © 2014, Felix 'Zoadian' Hufnagel",
 	"authors": ["Felix 'Zoadian' Hufnagel"],