[ADF-1549] Added doc files for Processlist library (#2353)

docs/start-process.component.md

@@ -0,0 +1,40 @@
+# Start Process component
+
+Displays Start Process, allowing the user to specify some basic details needed to start a new process instance.
+
+![adf-start-process ](../docassets/images/startProcess.png)
+
+<!-- markdown-toc start - Don't edit this section.  npm run toc to generate it-->
+
+<!-- toc -->
+
+- [Basic Usage](#basic-usage)
+  * [Properties](#properties)
+  * [Events](#events)
+
+<!-- tocstop -->
+
+<!-- markdown-toc end -->
+
+## Basic Usage
+
+```html
+<adf-start-process 
+    appId="YOUR_APP_ID" >
+</adf-start-process>
+```
+
+### Properties
+
+| Name | Description |
+| --- | --- |
+| appId |  (required): Limit the list of processes which can be started to those contained in the specified app |
+| variables | Variables in input to the process [RestVariable](https://github.com/Alfresco/alfresco-js-api/tree/master/src/alfresco-activiti-rest-api/docs/RestVariable.md)|
+
+### Events
+
+| Name | Description |
+| --- | --- |
+| start | Raised when the process start |
+| cancel | Raised when the process canceled |
+| error | Raised when the start process fail |