fix(CalendarList): make the scrollsToTop default true

Author: Abdalla Mohamed Elabd

src/calendar-list/index.js

@@ -28,7 +28,7 @@ class CalendarList extends Component {
     // Enable or disable vertical scroll indicator. Default = false
     showScrollIndicator: PropTypes.bool,
 
-    // When true the scroll view scrolls to top when the status bar is tapped
+    // When true, the calendar list scrolls to top when the status bar is tapped. Default = true
     scrollsToTop: PropTypes.bool
   };
 
@@ -181,7 +181,7 @@ class CalendarList extends Component {
         keyExtractor={(item, index) => index}
         initialScrollIndex={this.state.openDate ? this.getMonthIndex(this.state.openDate) : false}
         getItemLayout={this.getItemLayout}
-        scrollsToTop={this.props.scrollsToTop}
+        scrollsToTop={this.props.scrollsToTop !== undefined ? this.props.scrollsToTop : true}
       />
     );
   }