dotnet: add instructions for running dotnet restore.

Also added restore to the recompile.sh script

Author: kjnilsson

dotnet/README.md

@@ -21,9 +21,13 @@ the command line.
 
 ## Code
 
-Each command is best run -p in a separate console/terminal instance run from the root
+Each command is best run in a separate console/terminal instance run from the root
 of the tutorial directory.
 
+First run the `recompile.sh` script. This will run `dotnet restore` and build
+each project which is required before they can be run. Alternatively or if you are
+on windows cd into each project and run `dotnet restore` manually.
+
 #### [Tutorial one: "Hello World!"](http://www.rabbitmq.com/tutorial-one-dotnet.html)
 
     dotnet run -p Receive

dotnet/recompile.sh

@@ -1,5 +1,6 @@
 #!/bin/sh
 
 for f in */; do \
+    dotnet restore $f
     dotnet build $f
 done