Handling of Configuration and Platform parameters

When using the plugin with out any explicit command options but using the "Pass build variables as properties" option I'm finding the generated command line has broken properties generated.

I get the following
Path To MSBuild.exe: C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
Executing the command cmd.exe /C C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe /nologo /p:label=VS2012WDK;Configuration=Win8+Debug;Platform=x64 && exit %%ERRORLEVEL%% from C:\jenkins\workspace\VCHIq_Interface_Driver_(staging)\Configuration\Win8 Debug\Platform\x64\label\VS2012WDK

As you can see the /p option has no quotes and has change the space in the Configuration name into a plus.

version 1.16 work as expected.