Fix pan related docs (#623)

Author: M-i-k-e-l

src/components/panningViews/panListenerView.js

@@ -24,17 +24,17 @@ class PanListenerView extends PureBaseComponent {
     directions: PropTypes.arrayOf(PropTypes.oneOf(Object.values(PanningProvider.Directions))),
     /**
      * This is were you will get notified when a drag occurs
-     * onDrag = ({directions, velocities}) => {...}
+     * onDrag = ({directions, deltas}) => {...}
      * directions - array of directions
-     * velocities - array of velocities (same length and order as directions)
+     * deltas - array of deltas (same length and order as directions)
      * Both arrays will have {x, y} - if no x or y drag has occurred this value will be undefined
      */
     onDrag: PropTypes.func,
     /**
      * This is were you will get notified when a swipe occurs
-     * onSwipe = ({directions, deltas}) => {...}
+     * onSwipe = ({directions, velocities}) => {...}
      * directions - array of directions
-     * deltas - array of deltas (same length and order as directions)
+     * velocities - array of velocities (same length and order as directions)
      * Both arrays will have {x, y} - if no x or y swipe has occurred this value will be undefined
      */
     onSwipe: PropTypes.func,

src/components/panningViews/panResponderView.js

@@ -12,7 +12,7 @@ import asPanViewConsumer from './asPanViewConsumer';
  * @example: https://github.com/wix/react-native-ui-lib/blob/master/demo/src/screens/componentScreens/PanResponderScreen.js
  */
 class panResponderView extends PureComponent {
-  static displayName = 'panResponderView';
+  static displayName = 'PanResponderView';
   static propTypes = {
     /**
      * Will be called with the current location ({left, top}) when the pan has ended