Allow scroll to a specific position (#19)

* allow scroll to a specific position

* Update KeyboardAwareMixin.js

Applied suggestions from @APSL to add the `animated` parameter to this function and specify flow annotations

Author: Noah Lively

.gitignore

@@ -4,3 +4,5 @@ AwesomeProject.xcodeproj
 AwesomeProjectTests
 index.ios.js
 iOS
+
+.idea/

lib/KeyboardAwareMixin.js

@@ -48,6 +48,13 @@ const KeyboardAwareMixin = {
     this.keyboardWillHideEvent.remove()
   },
 
+  scrollToPosition: function (x: number, y: number, animated: bool = false) {
+    const scrollView = this.refs.keyboardView.getScrollResponder()
+    this.setTimeout(() => {
+      scrollView.scrollResponderScrollTo({x: x, y: y, animated: animated});
+    }, 220)
+  },
+
   /**
    * @param extraHeight: takes an extra height in consideration.
    */