Windows Installer: Add shortcut to testnet mode

contrib/build-wine/electrum.nsi

@@ -129,6 +129,8 @@ Section
   CreateDirectory "$SMPROGRAMS\${PRODUCT_NAME}"
   CreateShortCut "$SMPROGRAMS\${PRODUCT_NAME}\Uninstall.lnk" "$INSTDIR\Uninstall.exe" "" "$INSTDIR\Uninstall.exe" 0
   CreateShortCut "$SMPROGRAMS\${PRODUCT_NAME}\${PRODUCT_NAME}.lnk" "$INSTDIR\electrum-${PRODUCT_VERSION}.exe" "" "$INSTDIR\electrum-${PRODUCT_VERSION}.exe" 0
+  CreateShortCut "$SMPROGRAMS\${PRODUCT_NAME}\${PRODUCT_NAME} Testnet.lnk" "$INSTDIR\electrum-${PRODUCT_VERSION}.exe" "--testnet" "$INSTDIR\electrum-${PRODUCT_VERSION}.exe" 0
+
 
   ;Links bitcoin: URI's to Electrum
   WriteRegStr HKCU "Software\Classes\bitcoin" "" "URL:bitcoin Protocol"
@@ -168,4 +170,4 @@ Section "Uninstall"
   DeleteRegKey HKCU "Software\Classes\bitcoin"
   DeleteRegKey HKCU "Software\${PRODUCT_NAME}"
   DeleteRegKey HKCU "${PRODUCT_UNINST_KEY}"
-SectionEnd
+SectionEnd