add documentation

docs/how-to-use.md

@@ -4,7 +4,7 @@
 ## Example
 
 ```
-import actionsInteractor from 'actions-interactor';
+import actionsInteractor, {Types} from 'actions-interactor';
 interactor = actionsInteractor.create({
   name:'My interactor',
   description:'My description'
@@ -17,6 +17,12 @@ console.log(interactor);
 //   actions:[]
 // }
 
+interactor.addAction({
+  name:'Name'
+  description:'Description',
+  type: Types.ACTION_BASE
+})
+
 ```
 
 ## API
@@ -28,6 +34,21 @@ interactor object :
 * description: String,
 * actions: [Action](#action)[]
 
+## <a name="action_type">ACTION_TYPE</a>
+```
+import {Types} from 'actions-interactor';
+```
+
+- ACTION_BASE: 
+  - name: `String`
+  - description: `String`
+- ACTION_INPUT: as ACTION_BASE plus
+  - required: `Boolean`
+  - defaultValue: `String`
+- ACTION_COMBO: as ACTION_BASE plus
+  - required: `Boolean`
+  - choices: `Array` 
+
 ## Classes
 
 ### <a name="interactor">Interactor</a>
@@ -44,20 +65,17 @@ interactor object :
 
 Return true if all actions are valid.
 
-##### addInfo(name: String, description: String): boolean
-
-Add an action "information" to the list of actions
-Return true if action added.
-
-##### addInput(name: String, description: String[, required: boolean, defaultValue: :string]): boolean
-
-Add an action "input box" to the list of actions
-Return true if action added.
+##### addAction(obj: Object)
 
-##### addCombo(name: String, description: String, required: boolean, choices: Choice[]): boolean
+Add an action to the list of actions
 
-Add an action "combo" to the list of actions
-Return true if action added.
+obj :
+- name: `String`
+- description: `String`
+- type: [`ACTION_TYPE`](#action_type)
+- required: `Boolean`
+- defaultValue: `String`,
+- choices: `Array`
 
 ### <a name="action">Action</a>