Added file with info on shell extension registration

embroideryThumbs/shell reg info.txt

@@ -0,0 +1,18 @@
+Reg info goes here:
+HKCR
+  \.ext
+    \shellex
+      \{CLSID of interface, ie IExtractImage}
+
+Extension approval:
+HKLM
+  \SOFTWARE
+    \Microsoft
+      \Windows
+        \CurrentVersion
+          \Shell Extensions
+            \Approved
+
+For debugging extensions:
+HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer
+  create a DWORD called DesktopProcess with a value of 1