Fixed NUnit extension install.
Fixed NUnit extension install.

mterwoord/mbunit-v3,xJom/mbunit-v3,ajayanandgit/mbunit-v3,Gallio/mbunit-v3,xJom/mbunit-v3,Gallio/mbunit-v3,Gallio/mbunit-v3,Gallio/mbunit-v3,xJom/mbunit-v3,ajayanandgit/mbunit-v3,ajayanandgit/mbunit-v3,ajayanandgit/mbunit-v3,ajayanandgit/mbunit-v3,xJom/mbunit-v3,mterwoord/mbunit-v3,mterwoord/mbunit-v3,mterwoord/mbunit-v3,Gallio/mbunit-v3,xJom/mbunit-v3,Gallio/mbunit-v3,xJom/mbunit-v3,mterwoord/mbunit-v3,Gallio/mbunit-v3,ajayanandgit/mbunit-v3,mterwoord/mbunit-v3