Merge pull request #7700 from apolcyn/update_helloworld_readme

update original helloworld README

examples/csharp/helloworld/README.md

@@ -13,7 +13,7 @@ PREREQUISITES
 -------------
 
 - Windows: .NET Framework 4.5+, Visual Studio 2013 or 2015
-- Linux: Mono 4+, MonoDevelop 5.9+ (with NuGet add-in installed)
+- Linux: Mono 4+, MonoDevelop 5.9+
 - Mac OS X: Xamarin Studio 5.9+
 
 BUILD
@@ -21,7 +21,20 @@ BUILD
 
 - Open solution `Greeter.sln` with Visual Studio, Monodevelop (on Linux) or Xamarin Studio (on Mac OS X)
 
-- Build the solution (this will automatically download NuGet dependencies)
+# Using Visual Studio
+
+* Build the solution (this will automatically download NuGet dependencies)
+
+# Using Monodevelop or Xamarin Studio
+
+The nuget add-in available for Xamarin Studio and Monodevelop IDEs is too old to 
+download all of the nuget dependencies of gRPC. One alternative to is to use the dotnet command line tools instead (see [helloworld-from-cli]).
+
+Using these IDEs, a workaround is as follows:
+* Obtain a nuget executable for your platform and update it with
+ `nuget update -self`. 
+* Navigate to this directory and run `nuget restore`.
+* Now that packages have been restored into their proper package folder, build the solution from your IDE.
 
 Try it!
 -------
@@ -49,5 +62,6 @@ Tutorial
 
 You can find a more detailed tutorial in [gRPC Basics: C#][]
 
+[helloworld-from-cli]:../helloworld-from-cli/README.md
 [helloworld.proto]:../../protos/helloworld.proto
 [gRPC Basics: C#]:http://www.grpc.io/docs/tutorials/basic/csharp.html