Add a check for posix environment for pygments.

cheat

@@ -2,6 +2,10 @@
 import os
 import sys
 
+USE_PYGMENTS = False
+
+# NOTE remove this check if it is confirmed to work on windows
+if os.name == 'posix':
     try:
         from pygments import highlight
         from pygments.util import ClassNotFound
@@ -9,7 +13,7 @@ try:
         from pygments.formatters import TerminalFormatter
         USE_PYGMENTS = True
     except ImportError:
-    USE_PYGMENTS = False
+        pass
 
 
 def cheat_directories():