ADD: missing dependencies

Author: PascalCorpsman

miniprojects/Imageshop/Readme.md

@@ -14,4 +14,7 @@ How to use:
 - Load a image
 - connect the output of the image load box to the input of the Final output box (via drag drop)
 - use mouse scroll wheel to zoom
-- to delete a connection, redo the drag drop process for a existing line.
+- to delete a connection, redo the drag drop process for a existing line.
+
+Dependencies:
+- OpenGL ([dglOpenGL](https://github.com/saschawillems/dglopengl) and TOpenGLControl from the LCL)