MainApp: bump MainApp#VERSION to v1.1.0 for release (#62)

To prepare for v1.1.0 release, let's bump `MainApp#VERSION` to v1.1.0.

src/main/java/seedu/address/MainApp.java

@@ -44,7 +44,7 @@
  */
 public class MainApp extends Application {
 
-    public static final Version VERSION = new Version(0, 6, 0, true);
+    public static final Version VERSION = new Version(1, 1, 0, false);
 
     private static final Logger logger = LogsCenter.getLogger(MainApp.class);
 
@@ -56,7 +56,7 @@ public class MainApp extends Application {
 
     @Override
     public void init() throws Exception {
-        logger.info("=============================[ Initializing AddressBook ]===========================");
+        logger.info("=============================[ Initializing PlanWithEase ]===========================");
         super.init();
 
         AppParameters appParameters = AppParameters.parse(getParameters());
@@ -204,7 +204,7 @@ protected UserPrefs initPrefs(UserPrefsStorage storage) {
                     + "Using default user prefs");
             initializedPrefs = new UserPrefs();
         } catch (IOException e) {
-            logger.warning("Problem while reading from the file. Will be starting with an empty AddressBook");
+            logger.warning("Problem while reading from the file. Will be starting with an empty PlanWithEase");
             initializedPrefs = new UserPrefs();
         }
 
@@ -220,13 +220,13 @@ protected UserPrefs initPrefs(UserPrefsStorage storage) {
 
     @Override
     public void start(Stage primaryStage) {
-        logger.info("Starting AddressBook " + MainApp.VERSION);
+        logger.info("Starting PlanWithEase " + MainApp.VERSION);
         ui.start(primaryStage);
     }
 
     @Override
     public void stop() {
-        logger.info("============================ [ Stopping Address Book ] =============================");
+        logger.info("============================ [ Stopping PlanWithEase ] =============================");
         try {
             storage.saveUserPrefs(model.getUserPrefs());
         } catch (IOException e) {