NuGet.exe was removed from the repo

Build instructions were added to README.rst

Change-Id: I7d73d15764ac87c9cc37c0273b5b4a2200d99acb
Closes-Bug: #1494844

contrib/windows-agent/README.rst

@@ -4,5 +4,31 @@ Murano Windows Agent
 Murano Windows Agent is an initial version of Murano Agent.
 Currently, it's outdated and not supported.
 
-The main difference with the new Python agent is support of running Powershell.
+The main difference with the new Python agent is support of running PowerShell.
 After this support will be added to Python Agent, Windows Agent will be dropped.
+
+
+How to build
+============
+
+Build using Visual Studio
+-------------------------
+1. Launch Visual Studio
+#. Ensure that you have latest ``NuGet`` extension installed (shipped with recent
+   versions of VS)
+#. Open ``WindowsAgent.sln``
+#. Select target configuration (Release or Debug) using drop-down found in VS
+   toolbar
+#. Build the Solution (Build menu -> Build Solution).
+
+
+Build from command line
+-----------------------
+1. CD to where ``WindowsAgent.sln`` is located
+#. Download nuget.exe from https://dist.nuget.org/win-x86-commandline/latest/nuget.exe
+   to current directory.
+#. Run ``nuget.exe restore``
+#. Build the solution using msbuild:
+   ``C:\\Windows\\Microsoft.NET\\Framework64\\v4.0.30319\\MSBuild.exe /p:Configuration=Release``
+
+   The exact path to msbuild may differ on your system and .NET version installed.

contrib/windows-agent/WindowsAgent/WindowsAgent.csproj

@@ -83,7 +83,6 @@
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <PropertyGroup>
-    <PreBuildEvent>$(SolutionDir)Tools\nuget install $(ProjectDir)packages.config -o $(SolutionDir)Packages</PreBuildEvent>
   </PropertyGroup>
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.

contrib/windows-agent/packages/repositories.config

@@ -1,4 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<repositories>
-  <repository path="..\WindowsAgent\packages.config" />
-</repositories>