Added *WYSIWYG* concept to README

To not forget about it :)

README.org

@@ -85,7 +85,7 @@ The documentation of /Volt/ includes:
 
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-It also provides a builtin application that acts as the official *editor*, where you can customize every aspect of your project, debug it, build it and ship it to the end user.
+It also provides a builtin application that acts as the official *editor*, where you can customize every aspect of your project, debug it, build it and ship it to the end user. This is a *WYSIWYG*-style editor (i.e. *What You See Is What You Get*), meaning that everything done in the editor will be exactly reflected on the final product.
 
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