Update package creation script

Author: craigfowler

Tools/Create-NuGet-packages.sh

@@ -7,6 +7,8 @@ then
   exit 1
 fi
 
+sn -R CSF.WebDriverExtras/bin/Release/CSF.WebDriverExtras.dll CSF-Software-OSS.snk
+
 find . \
   -type f \
   -name "*.nuspec" \