Merge pull request #356 from wonderflow/muteable

make component muteable and add revisionName

7.application_configuration.md

@@ -78,7 +78,8 @@ This section defines the instances of components to create with the application
 
 | Attribute | Type | Required | Default Value | Description |
 |-----------|------|----------|---------------|-------------|
-| `componentName` | `string` | Y | | The name of the component of which to create an instance. |
+| `componentName` | `string` | N | | The name of the component of which to create an instance. The revision of this instance will always reflect the latest change of the component (i.e. always track latest revision). This is mutually exclusive with revisionName.|
+| `revisionName` | `string` | N | | The name of specific component revision of which to create an instance, i.e. always stick to specific revision until this field is updated. This is mutually exclusive with componentName. |
 | `parameterValues` | [`[]ParameterValue`](#parameterValue) | N | | Overrides of parameters that are exposed by the application scope type defined in `type`. |
 | `scopes` | [`[]Scope`](#scope) | N | | The scopes to be used in the component. A component joins a scope by referencing it. |
 | `traits` | [`[]Trait`](#trait) | N | | The traits to attach to this component instance. |