Add publish script.

Author: timostamm

Makefile

@@ -0,0 +1,12 @@
+
+
+release: 
+ifeq ($(strip $(version)),)
+	@echo "\033[31mERROR:\033[0;39m No version provided."
+	@echo "\033[1;30mmake pack version=1.0.0\033[0;39m"
+else
+	dotnet pack --verbosity quiet --nologo -c Release /p:PackageVersion=$(version) src
+	@echo packed $(version)
+	nuget push src/bin/Release/TimoStamm.WebSockets.Controller.$(version).nupkg  -Source https://www.nuget.org
+endif
+