Update package display name and description

Author: adamgraham

README.md

@@ -1,4 +1,6 @@
-# Physics Utilities
+# Physics Utils
+
+The Physics Utils package contains physics-related scripts and utilities for Unity projects.
 
 ## Installation
 

package.json

@@ -1,8 +1,8 @@
 {
   "name": "com.zigurous.physics",
   "version": "0.1.0",
-  "displayName": "Zigurous Physics",
-  "description": "Physics scripts and utilities for Unity projects.",
+  "displayName": "Zigurous Physics Utils",
+  "description": "The Physics Utils package contains physics-related scripts and utilities for Unity projects.",
   "unity": "2019.4",
   "keywords": [
     "physics",