From 857f5a9a641872346a819cc8c095c263106105ac Mon Sep 17 00:00:00 2001
From: Wojciech Nagrodzki <278594+wnagrodzki@users.noreply.github.com>
Date: Mon, 13 Jan 2014 22:39:30 +0100
Subject: [PATCH] Update README.md

---
 README.md | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 36a6d3b..72b5600 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,18 @@
-OneFingerRotation
+One Finger Rotation Gesture Recognizer
 =================
+
+NGRotationGestureRecognizer is a concrete subclass of UIGestureRecognizer that looks for rotation gestures involving one touch. Rotation is calculated between initial and current finger position around center of the view where gesture recognizer is added to.
+
+Rotation can be set any time for convenience.
+
+```Objective-C
+- (void)handleRotationGesture:(NGRotationGestureRecognizer *)gestureRecognizer
+{
+    if (gestureRecognizer.state == UIGestureRecognizerStateBegan) {
+        gestureRecognizer.rotation = atan2(self.twirlImageView.transform.b, self.twirlImageView.transform.a);
+    }
+    else if (gestureRecognizer.state == UIGestureRecognizerStateChanged) {
+        self.twirlImageView.transform = CGAffineTransformMakeRotation(gestureRecognizer.rotation);
+    }
+}
+```