Add a New Action Example

See this pull request for an example of adding a new action: https://github.com/jessvb/convo/pull/102/files

The simple action implemented in the above pull request shows how to cause Convo to add a "greet" action to the procedure if the user says "greet", "greetings", "greet me", etc. When executing the action, Convo will say, "Hello world!".

For more information on what was implemented in the above pull request, see the Add New Action How-to Guide.