add usage.md

README.md

@@ -15,7 +15,7 @@ If you are looking for the SendGrid API client library, please see [this repo](h
 * [Announcements](#announcements)
 * [Installation](#installation)
 * [Quick Start](#quick-start)
-* [Usage](#usage)
+* [Library Usage Documentation](USAGE.md)
 * [Roadmap](#roadmap)
 * [How to Contribute](#contribute)
 * [Thanks](#thanks)
@@ -85,20 +85,6 @@ Console.WriteLine(response.StatusCode);
 Console.WriteLine(response.Body.ReadAsStringAsync().Result);
 Console.WriteLine(response.Headers.ToString());
 ```
-<a name="usage"></a>
-# Usage
-
-- [Example Code](https://github.com/sendgrid/csharp-http-client/blob/master/Example/Example.cs)
-
-## Environment Variables 
-
-You can do the following to create a .env file:
-
-```cp .env_example .env```
-
-Then, just add your API Key into your .env file.
-
-
 <a name="roadmap"></a>
 # Roadmap
 

USAGE.md

@@ -0,0 +1,11 @@
+# Usage
+
+- [Example Code](https://github.com/sendgrid/csharp-http-client/blob/master/Example/Example.cs)
+
+## Environment Variables 
+
+You can do the following to create a .env file:
+
+```cp .env_example .env```
+
+Then, just add your API Key into your .env file.