Update README.md

Added description of what the extension can do for you
pwwilson · Jun 12, 2014 · 30a7cc6 · 30a7cc6
1 parent af182c1
commit 30a7cc6
Showing 1 changed file with 16 additions and 3 deletions.
diff --git a/README.md b/README.md
@@ -1,4 +1,17 @@
-SCNVector3Extensions
-====================
+# SCNVector3Extensions
 
-An extension of SCNVector3 that adds helpful functions to calculate dot products, cross products etc
+An extension of SCNVector3 written in Swift that adds helpful functions to calculate dot products, cross products etc. By using this extension you can do (almost) the same math on SCNVector3 as you can with a GLKVector3 using GLKit
+
+## What can SCNVector3Extensions do for you?
+
+It extends 'SCNVector3' sp you can do:
+
+```swift
+let v1 = SCNVector3Make(0, 1, 2)
+let v2 = SCNVector3Make(1, 2, 3)
+let v3 = v1 + v2
+let v4 = v3 * 100
+println("Vector has length \(v4.length())")
+let v5 = v4.normalized()
+let dist = v1.distance(v2)
+```