Update README.md

Author: omerjerk

README.md

@@ -3,6 +3,6 @@ In this branch, I'm maintaing another approach to render camera preview on proce
 The idea is to render camera preview on a `SurfaceTexture` and as soon as the new frame is received, copy the data from this `SurfaceTexture` to processing's underlying texure. 
 We cannot directly render to processing's own texture because it's bound `GLES20.GL_TEXTURE_2D` target, whereas for the preview to happen, the texture should be bound to `GLES11Ext.GL_TEXTURE_EXTERNAL_OES`.
 
-As of now, I've written pretty much the OpenGL code but a lot still remains to be fixed.
+I create a framebuffer object and attach processing's own texture to this framebuffer at GL_COLOR_ATTACHMENT0. I then render SurfaceTexture shader output to this framebuffer and it atomatically gets drawn to processing's texture.
 
-For an alternative, but working, ultra slow approach head over to pixel_manipulation branch.
+For an alternative approach, please head over to pixel_manipulation branch.