Fix csproj and update readme with install instructions

Author: Stay1444

DirectusSharp/DirectusSharp.csproj

@@ -14,7 +14,7 @@
         <Authors>Stay1444</Authors>
         <Description>An unofficial Directus API Wrapper for .NET</Description>
 
-        <PackageProjectUrl>https://github.com/Stay1444/DirectusSharp/blob/master/README.md</PackageProjectUrl>o
+        <PackageProjectUrl>https://github.com/Stay1444/DirectusSharp/blob/master/README.md</PackageProjectUrl>
         <RepositoryUrl>https://github.com/Stay1444/DirectusSharp</RepositoryUrl>
         <RepositoryType>git</RepositoryType>
 

README.md

@@ -4,6 +4,25 @@ An unofficial .NET wrapper for [Directus](https://directus.io/).
 
 It's not fully complete as I add stuff to it once I need it. Contributions are welcome.
 
+## Installation
+
+[![NuGet latest release](https://img.shields.io/nuget/v/DirectusSharp.svg)](https://www.nuget.org/packages/DirectusSharp)
+
+You can add this library to your project using NuGet.
+
+**Package Manager Console**
+Run the following command in the “Package Manager Console”:
+
+> PM> Install-Package DirectusSharp
+
+**Visual Studio**
+Right click to your project in Visual Studio, choose “Manage NuGet Packages” and search for ‘DirectusSharp’ and click ‘Install’.
+
+**.NET Core Command Line Interface**
+Run the following command from your favorite shell or terminal:
+
+> dotnet add package DirectusSharp 
+
 ## Questions?
 
 Feel free to send me an email `staylluc@gmail.com` or create an issue with your question.