Update the AboutUs.md file and include new images

docs/AboutUs.md

@@ -48,12 +48,12 @@ You can reach us at the email `seer[at]comp.nus.edu.sg`
 * Role: Developer
 * Responsibilities: Dev Ops + Threading
 
-### James Doe
+### Dexter Wong
 
-<img src="images/johndoe.png" width="200px">
+<img src="images/dexter.png" width="200px">
 
-[[github](http://github.com/johndoe)]
-[[portfolio](team/johndoe.md)]
+[[github](http://github.com/Dexter-Wong)]
+[[portfolio](team/dexter.md)]
 
 * Role: Developer
 * Responsibilities: UI

docs/team/dexter.md

@@ -0,0 +1,46 @@
+---
+layout: page
+title: John Doe's Project Portfolio Page
+---
+
+### Project: AddressBook Level 3
+
+AddressBook - Level 3 is a desktop address book application used for teaching Software Engineering principles. The user interacts with it using a CLI, and it has a GUI created with JavaFX. It is written in Java, and has about 10 kLoC.
+
+Given below are my contributions to the project.
+
+* **New Feature**: Added the ability to undo/redo previous commands.
+  * What it does: allows the user to undo all previous commands one at a time. Preceding undo commands can be reversed by using the redo command.
+  * Justification: This feature improves the product significantly because a user can make mistakes in commands and the app should provide a convenient way to rectify them.
+  * Highlights: This enhancement affects existing commands and commands to be added in future. It required an in-depth analysis of design alternatives. The implementation too was challenging as it required changes to existing commands.
+  * Credits: *{mention here if you reused any code/ideas from elsewhere or if a third-party library is heavily used in the feature so that a reader can make a more accurate judgement of how much effort went into the feature}*
+
+* **New Feature**: Added a history command that allows the user to navigate to previous commands using up/down keys.
+
+* **Code contributed**: [RepoSense link]()
+
+* **Project management**:
+  * Managed releases `v1.3` - `v1.5rc` (3 releases) on GitHub
+
+* **Enhancements to existing features**:
+  * Updated the GUI color scheme (Pull requests [\#33](), [\#34]())
+  * Wrote additional tests for existing features to increase coverage from 88% to 92% (Pull requests [\#36](), [\#38]())
+
+* **Documentation**:
+  * User Guide:
+    * Added documentation for the features `delete` and `find` [\#72]()
+    * Did cosmetic tweaks to existing documentation of features `clear`, `exit`: [\#74]()
+  * Developer Guide:
+    * Added implementation details of the `delete` feature.
+
+* **Community**:
+  * PRs reviewed (with non-trivial review comments): [\#12](), [\#32](), [\#19](), [\#42]()
+  * Contributed to forum discussions (examples: [1](), [2](), [3](), [4]())
+  * Reported bugs and suggestions for other teams in the class (examples: [1](), [2](), [3]())
+  * Some parts of the history feature I added was adopted by several other class mates ([1](), [2]())
+
+* **Tools**:
+  * Integrated a third party library (Natty) to the project ([\#42]())
+  * Integrated a new Github plugin (CircleCI) to the team repo
+
+* _{you can add/remove categories in the list above}_