update nsis script to make installed start menu link use icon

nsis/cwtch-installer.nsi

@@ -26,7 +26,7 @@ InstallDirRegKey HKCU "Software\Cwtch" "installLocation"
 
 !define MUI_INSTALLCOLORS "DFB9DE 281831"
 
-!define MUI_ICON "..\nsis\knot.ico"
+!define MUI_ICON "..\windows\cwtch.ico"
 
 
 !define MUI_HEADERIMAGE
@@ -83,7 +83,8 @@ Section
 
 
     # create a shortcut in the start menu programs directory
-    CreateShortcut "$SMPROGRAMS\Cwtch.lnk" "$INSTDIR\ui.exe"
+    CreateDirectory "$SMPROGRAMS\Cwtch"
+    CreateShortcut "$SMPROGRAMS\Cwtch\Cwtch.lnk" "$INSTDIR\ui.exe" "" "$INSTDIR\cwtch.ico"
 
     ;Store installation folder
     WriteRegStr HKCU "Software\Cwtch" "installLocation" $INSTDIR