Update README

README.md

@@ -509,6 +509,18 @@ img.setCorners(scaledCorners);
   <ul><li>Returns the center (<a href="http://en.wikipedia.org/wiki/Centroid">centroid</a>) of the image.</li></ul>
 </details>
 
+<details><summary><code><b>getAngle()</b>: Number</code></summary>
+  <ul><li>Returns the image's rotation in degrees (0-360).</li></ul>
+</details>
+
+<details><summary><code><b>setAngle(<i>deg</i> &#60;number -360...360>)</b>: this</code></summary>
+  <ul><li>Sets the image's rotation to the given degrees.</li></ul>
+</details>
+
+<details><summary><code><b>rotateByDeg(<i>deg</i> &#60;number>)</b>: this</code></summary>
+  <ul><li>Rotates the image by the given degrees relative to its current rotation.</li></ul>
+</details>
+
 <details><summary><code><b>scaleBy(<i>factor</i> &#60;number>)</b>: this</code></summary>
   <ul>
     <li>Scales the image by the given factor and calls <code>#setCorners</code>.</li>
@@ -518,10 +530,6 @@ img.setCorners(scaledCorners);
   </ul>
 </details>
 
-<details><summary><code><b>rotateBy(<i>rad</i> &#60;number>)</b>: this</code></summary>
-  <ul><li>Rotates the image by the given radian angle and calls <code>#setCorners</code>.</li></ul>
-</details>
-
 <details><summary><code><b>isSelected()</b>: Boolean</code></summary>
   <ul><li>Returns true if the individual image instance is selected.</li></ul>
 </details>