converted some URLs to links; added screenshot

README.md

@@ -1,16 +1,21 @@
 Addressbook Tutorial
 ====================
 
-This tutorial teaches you some of the basic concepts in Vaadin Framework. It is meant to be 
+This tutorial teaches you some of the basic concepts in [Vaadin Framework](https://vaadin.com). It is meant to be
 a fast read for learning how to get started - not an example on how application should be
 designed. Please note this example uses and requires Java 8 to work.
 
+![Addressbook Screenshot](addressbook_screenshot.png "Addressbook Screenshot")
+
 
 Running the example from the command line
 -------------------
+```
 $ mvn jetty:run
+```
+
+Open [http://localhost:8080/](http://localhost:8080/)
 
-Open http://localhost:8080/
 
 Importing in IntelliJ IDEA 14
 --------------------
@@ -21,7 +26,7 @@ To get the project up and running in IDEA, do:
 - The URL to use is https://github.com/vaadin/addressbook.git
 - If you get a message about "Non-managed pom.xml file found". Choose "Add as Maven Project"
 - If you get a message about no JDK or SDK being selected. Choose "Configure" and select your installed JDK. You can also set the JDK using File -> Project Structure
-- To start the project, find the "Maven Projects" tab on the right hand side of the screen and navigate to 
+- To start the project, find the "Maven Projects" tab on the right hand side of the screen and navigate to
   - Vaadin Web Application -> Plugins -> jetty -> jetty:run
   - Click the play button or right click and select Run (Select Debug instead to run in debug mode)
 
@@ -47,13 +52,13 @@ These instructions were tested on Eclipse IDE for Java EE Developers Luna SR2. Y
 To checkout and run the project in Eclipse, do:
 - File -> Import...
 - Check out Maven Projects from SCM
-- Choose Git from SCM menu 
+- Choose Git from SCM menu
   - If you do not see "Git" in the SCM menu, click "Find more SCM connectors in the m2e Marketplace" and install "m2e-egit". Restart Eclipse and start over.
 - Set the repository URL to https://github.com/vaadin/addressbook.git
-- Right click the imported "addressbook" and choose Run As -> Maven Build... 
+- Right click the imported "addressbook" and choose Run As -> Maven Build...
   - Set the goal to "jetty:run" and click "Run"
 
-You should now have a Jetty server running on localhost:8080. Navigate to http://localhost:8080 to play with the application
+You should now have a Jetty server running on localhost:8080. Navigate to [http://localhost:8080/](http://localhost:8080/) to play with the application
 
 To use the built in server adapters of Eclipse, instead of doing "Run As -> Maven Build..." you can do
 - Run As -> Run on Server