doc - update instructions

Signed-off-by: Dan Selman <[email protected]>

README.md

@@ -28,23 +28,31 @@ If you want to use this plugin:
 
 The extension is available from the Visual Studio Marketplace at https://marketplace.visualstudio.com/items?itemName=accordproject.cicero-vscode-extension
 
-## Snippets
+### Concerto Snippets
 
-### For Concerto
+The extention adds snippets for the following elements of the Concerto language.
 
-We provide snippets generation for all the class method present in the Concerto languages.
-
-| Classes     |   Prefix    |
+| Element     |   Prefix    |
 | :---------- | :---------: |
 | Asset       |    asset    |
 | Participant | participant |
 | Transaction | transaction |
 | Concept     |   concept   |
 | Enum        |    enum     |
 
-## For Contributors
+### Ergo Snippets
+
+The extention adds snippets for the following elements of the Ergo language.
+
+| Element     |   Prefix    |
+| :---------- | :---------: |
+| Clause      |   clause    |
+| Contract    | contract    |
+
+
+## Contributors
 
-### Structure
+### Code Structure
 
 ```
 .