fix(src): eslint issues

Author: tomchentw

src/index.js

@@ -2,7 +2,7 @@ import GoogleMaps from "./GoogleMaps";
 
 import Circle from "./Circle";
 import DirectionsRenderer from "./DirectionsRenderer";
-import DrawingManager from './DrawingManager';
+import DrawingManager from "./DrawingManager";
 import InfoWindow from "./InfoWindow";
 import Marker from "./Marker";
 import Polygon from "./Polygon";

src/internals/EventComponent.js

@@ -8,7 +8,7 @@ function noop () {
 class EventComponent extends React.Component {
   /* Contract
    *  statics:
-   *    _registerEvents: 
+   *    _registerEvents:
    *  member:
    *    _createOrUpdateInstance
    */

src/internals/SimpleChildComponent.js

@@ -10,7 +10,7 @@ const {PropTypes} = React;
 class SimpleChildComponent extends EventComponent {
   /* Contract
    *  statics:
-   *    _GoogleMapsClassName: 
+   *    _GoogleMapsClassName:
    *  state:
    *    instance
    */

src/internals/exposeGetters.js

@@ -4,6 +4,6 @@ function exposeGetters (component, prototype, instance) {
       component[key] = instance[key].bind(instance);
     }
   }
-};
+}
 
 export default exposeGetters;