Update documentation and credits

CREDITS.md

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+Thanks to these people who have contributed to WCF Binary Message Inspector
+
+* [The original WCF Binary Inspector team](http://archive.msdn.microsoft.com/wcfbinaryinspector/People/ProjectPeople.aspx)
+* [HofmaDresu](https://github.com/HofmaDresu) - Editable feature

README.md

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 WCF Binary Message Inspector
 ============================
 
-This is a modification of the [WCF Binary Message Inspector](http://archive.msdn.microsoft.com/wcfbinaryinspector) that uses a treeview instead of a textarea.
+This is a modification of the [WCF Binary Message Inspector](http://archive.msdn.microsoft.com/wcfbinaryinspector). It provides two notable enhancements:
+
+1. Uses a collapsible tree view instead of a textarea to display the decoded WCF binary message.
+2. Allows editing and reissuing of captured WCF binary messages (thanks to [HofmaDresu](https://github.com/HofmaDresu))
 
 Installation
 ------------
 
-Copy the file `BinaryMessageFiddlerExtension/bin/Release/BinaryMessageFiddlerExtension.dll` into `C:\Program Files\Fiddler2\Inspectors` and restart Fiddler.
+Copy the file `BinaryMessageFiddlerExtension/bin/Release/BinaryMessageFiddlerExtension.dll` into `C:\Program Files\Fiddler2\Inspectors` and restart Fiddler. The inspector is titled "WCF Binary XML."
 
-Usage
------
+Tree View Usage
+---------------
 
-This inspector provides the following shortcuts:
+The tree view provides the following shortcuts:
 
 * Ctrl+c — Copy current node XML
 * Ctrl+Shift+c — Copy tree XML
 * Alt+→ — Expand node and all child nodes
 * Alt+← — Collapse node and all child nodes
 * Middle-click — Toggle expand/collapse of node and all child nodes
 
+Edit Usage
+----------
+
+1. Capture a WCF binary message
+2. In the sessions list, right click on the message and choose "Unlock for editing"
+3. Edit the request 
+4. Reissue the request using the toolbar or the session list context menu
+
 Development
 -----------