Update package description

Author: adamgraham

README.md

@@ -1,5 +1,13 @@
 # UI Toolkit
 
+The UI Toolkit package contains scripts and utilities for creating UI in Unity projects.
+
+Import the package namespace in each class/script you want to use it. You may need to regenerate project files/assemblies first.
+
+```csharp
+using Zigurous.UI;
+```
+
 ## Installation
 
 The Unity Package Manager can load a package from a Git repository on a remote server.

package.json

@@ -2,7 +2,7 @@
   "name": "com.zigurous.ui",
   "version": "0.1.0",
   "displayName": "Zigurous UI Toolkit",
-  "description": "Lorem ipsum dolor sit amet, consectetur adipiscing elit.",
+  "description": "The UI Toolkit package contains scripts and utilities for creating UI in Unity projects.",
   "unity": "2019.4",
   "repository": "https://github.com/zigurous/unity-ui-toolkit",
   "publishConfig": {