Change version number to v1.3.0 (#163)

* Update AboutUs.adoc for team members to commit

* Add a newline in AboutUs.adoc

* Add more use cases to Developer Guide

* Fix missing endline

* Update various docs to display TagLine

* Add placeholder image

* Fix minor typo in user guide

* Update Tagline to TagLine

* Update team name

* Fix some typos in user guide and developer guide

* Change version number

src/main/java/tagline/MainApp.java

@@ -49,7 +49,7 @@
  */
 public class MainApp extends Application {
 
-    public static final Version VERSION = new Version(1, 2, 0, true);
+    public static final Version VERSION = new Version(1, 3, 0, true);
 
     private static final Logger logger = LogsCenter.getLogger(MainApp.class);