Update NuGet/ServiceStack.Host.Mvc/content/README.txt

For some reason, 

            routes.IgnoreRoute("api/{*pathInfo}");
            routes.IgnoreRoute("{*favicon}", new { favicon = @"(.*/)?favicon.ico(/.*)?" }); //Prevent exceptions for favicon

should be placed before the other statements. Otherwise the routing is not working
Merge pull request #331 from mattiasw2/patch-1

Update NuGet/ServiceStack.Host.Mvc/content/README.txt
merged from upstream
merged form upstream
including query params in OAuth Signature when fetching request token
Merge branch 'master' into upstream