Merge branch 'master' into feature/add_step_5.1

Author: jonathanrocher

stage4.0_first_application/README.md

@@ -1 +1,10 @@
 # Hello world in ETS pyface!
+This folder contains a "hello world" application using ETS' pyface package. To 
+execute it, 
+- an application object defines a custom application next to a `main.py` script 
+  which executes it. 
+- The content of the application is a single Task which contains a single 
+  TraitsUI-based pane displaying a model's string content.
+
+Optional: If you want to get ahead, continue on and add a dock pane (still 
+traitsUI based) which displays "hello world" as a left side panel.

stage4.1_first_application/README.md

@@ -1 +1,11 @@
 # First real version of the pycasa ETS pyface application!
+Building on the hello world application, this stage creates a real application 
+that allows to navigate the local drive, and open an image file in the central 
+pane. The following steps are taken here: 
+- create a realistic task with a split editor area pane for the central pane 
+  and a file browser dock pane that exposes the home folder using the custom 
+  version of TraitsUI's `FileEditor`. 
+- Adds a ImageFile model, view and an editor so that an image can be open in 
+  the central pane.
+- Add a listener on the file browser double-click event to trigger opening the 
+  image file.