Replace nuget version with placeholder.

Build/MQTTnet.AspNetCore.nuspec

@@ -14,7 +14,8 @@
     <copyright>Copyright Christian Kratky 2016-2018</copyright>
     <tags>MQTT Message Queue Telemetry Transport MQTTClient MQTTServer Server MQTTBroker Broker NETStandard IoT InternetOfThings Messaging Hardware Arduino Sensor Actuator M2M ESP Smart Home Cities Automation Xamarin</tags>
     <dependencies>
-      <dependency id="MQTTnet" version="2.8.5" />
+      <dependency id="MQTTnet" version="$nugetVersion" />
+
       <dependency id="Microsoft.AspNetCore.Connections.Abstractions" version="2.1.3" />
       <dependency id="Microsoft.AspNetCore.WebSockets" version="2.1.1" />
       <dependency id="Microsoft.Extensions.Hosting.Abstractions" version="2.1.1" />

Build/MQTTnet.Extensions.ManagedClient.nuspec

@@ -14,7 +14,7 @@
     <copyright>Copyright Christian Kratky 2016-2018</copyright>
     <tags>MQTT Message Queue Telemetry Transport MQTTClient MQTTServer Server MQTTBroker Broker NETStandard IoT InternetOfThings Messaging Hardware Arduino Sensor Actuator M2M ESP Smart Home Cities Automation Xamarin</tags> 
     <dependencies>
-      <dependency id="MQTTnet" version="2.8.5" />
+      <dependency id="MQTTnet" version="$nugetVersion" />
     </dependencies>
   </metadata>
 

Build/MQTTnet.Extensions.Rpc.nuspec

@@ -14,7 +14,7 @@
     <copyright>Copyright Christian Kratky 2016-2018</copyright>
     <tags>MQTT Message Queue Telemetry Transport MQTTClient MQTTServer Server MQTTBroker Broker NETStandard IoT InternetOfThings Messaging Hardware Arduino Sensor Actuator M2M ESP Smart Home Cities Automation Xamarin</tags> 
     <dependencies>
-      <dependency id="MQTTnet" version="2.8.5" />
+      <dependency id="MQTTnet" version="$nugetVersion" />
     </dependencies>
   </metadata>
 

Build/build.ps1

@@ -39,7 +39,11 @@ if ($path) {
 
 	Remove-Item .\NuGet -Force -Recurse -ErrorAction SilentlyContinue
 
-    New-Item -ItemType Directory -Force -Path .\NuGet
+	(Get-Content MQTTnet.AspNetCore.nuspec) -replace '$nugetVersion', $nugetVersion | Set-Content MQTTnet.AspNetCore.nuspec
+	(Get-Content MQTTnet.Extensions.Rpc.nuspec) -replace '$nugetVersion', $nugetVersion | Set-Content MQTTnet.Extensions.Rpc.nuspec
+	(Get-Content MQTTnet.Extensions.ManagedClient.nuspec) -replace '$nugetVersion', $nugetVersion | Set-Content Extensions.ManagedClient.nuspec
+	
+	New-Item -ItemType Directory -Force -Path .\NuGet
     .\nuget.exe pack MQTTnet.nuspec -Verbosity detailed -Symbols -OutputDir "NuGet" -Version $nugetVersion
     .\nuget.exe pack MQTTnet.AspNetCore.nuspec -Verbosity detailed -Symbols -OutputDir "NuGet" -Version $nugetVersion
 	.\nuget.exe pack MQTTnet.Extensions.Rpc.nuspec -Verbosity detailed -Symbols -OutputDir "NuGet" -Version $nugetVersion