Updated Intercom.nuspec and README.md

Intercom/Intercom.nuspec

@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <package xmlns="http://schemas.microsoft.com/packaging/2010/07/nuspec.xsd">
   <metadata>
-    <id>Intercom</id>
+    <id>Intercom.NET</id>
     <title>Intercom</title>
     <version>$version$</version>
     <authors>gonace</authors>

README.md

@@ -11,28 +11,75 @@ You can download the intercom client nuget.
 ## Usage
 > For the full documentation please read our [wiki](https://github.com/gonace/intercom/wiki)!
 
+### Simple
+> If you're using .NET (former .NET Core) and utilizing the default hosting and startup pattern (`Microsoft.Extensions.Hosting`) you use [`Intercom.Extensions.Hosting`](https://github.com/gonace/Intercom.Extensions.Hosting).
+
+The easiest way to use the client is to run `.Configure()`, this will create a static instance (`Intercom`) of the client that can be used throughout your application.
+
+The `Configure()` method can be initiated in two ways,
+* `Intercom.Configure("baseUri", "bearerToken")`
+* `Intercom.Configure("baseUri", "bearerToken", apiVersion)`
+
+#### Examples
+```c#
+using Intercom.Constants;
+
+Intercom.Configure(Url.Production, "bearerToken");
+```
 ```c#
-Intercom.Configure("baseUri", "bearerToken")
+using Intercom.Constants;
 
-Intercom.Companies...
-Intercom.Me...
+Intercom.Configure(Url.Production, "bearerToken", Version.Latest)
 ```
 
+### Advanced
+If you only need access to one (or a few) clients you're able to configure each client individually.
+
+#### Examples
 ```c#
+using Intercom.Constants;
+
 public class SomeClass
 {
     private readonly ICompaniesClient _client;
 
     public SomeClass()
     {
-        _client = new CompaniesClient("baseUri", "bearerToken")
+        _client = new CompaniesClient(Url.Production, "bearerToken")
     }
 }
 ```
 
 ```c#
+
+public class SomeClass
+{
+    private readonly ICompaniesClient _client;
+
+    public SomeClass()
+    {
+        _client = new CompaniesClient(Url.Production, "bearerToken", Version.Latest)
+    }
+}
 ```
 
+### Constants
+#### Url
+The url constant is used to identify what production environment that will be used.
+
+* `Production => "https://api.intercom.io/"`
+* `ProductionAustralia => "https://api.au.intercom.io/"`
+* `ProductionEurope => "https://api.eu.intercom.io/"` 
+
+
+#### Version
+The version constant is used to identify what Intercom API version (Intercom-Version header) will be used, `Latest` always points to the highest available.
+
+ * `Latest`
+ * `Version_2_9`
+ * `Version_2_8`
+ * `Version_2_7`
+
 ## Development
 ### TODO