Check for pyopengl-accelerate and info on BlueSky run without it

check.py

@@ -102,6 +102,15 @@ def initializeGL(self):
                 print('[FAIL]')
                 print('Could not determine GL version')
 
+            print("Checking for pyopengl-accelerate", end=' ')
+        try:
+            import OpenGL_accelerate
+        except ImportError:
+            print("[FAIL]")
+        else:
+            print('[OK]')
+
+
 print("Checking for pygame             ", end=' ')
 try:
     import pygame

setup-python.errors.then.readme.txt

@@ -1,5 +1,6 @@
 Windows 10 users:
 If you get errors installing pyopengl-accelerate, this is due to a problem
 with Microsofts Build tools and Python 3.7.
-The best solution for now is to step back to python 3.6.
-Hopefully this will soon be fixed by the pyopengl-accelerate developer 
+Hopefully this will soon be fixed by the pyopengl-accelerate developer.
+You could step back to Python 3.6 (to use pyopengl-accelerate)
+or run BlueSky with Python 3.7 (without pyopengl-accelerate).