add markdown linter (#2048)

ng2-components/ng2-alfresco-core/README.md

@@ -18,6 +18,9 @@
 - [Alfresco Api Service](#alfresco-api-service)
 - [AppConfigService](#appconfigservice)
   * [Different configurations based on environment settings](#different-configurations-based-on-environment-settings)
+  * [Variable substitution in configuration strings](#variable-substitution-in-configuration-strings)
+  * [Unit testing](#unit-testing)
+- [User Preferences Service](#user-preferences-service)
 - [Notification Service](#notification-service)
 - [Context Menu directive](#context-menu-directive)
 - [Accordion Component](#accordion-component)
@@ -30,7 +33,6 @@
 - [AlfrescoTranslationService](#alfrescotranslationservice)
 - [Renditions Service](#renditions-service)
 - [Build from sources](#build-from-sources)
-- [Build from sources](#build-from-sources-1)
 - [NPM scripts](#npm-scripts)
 - [Demo](#demo)
 - [License](#license)
@@ -41,7 +43,7 @@
 
 ## Prerequisites
 
-Before you start using this development framework, make sure you have installed all required software and done all the 
+Before you start using this development framework, make sure you have installed all required software and done all the
 necessary configuration, see this [page](https://github.com/Alfresco/alfresco-ng2-components/blob/master/PREREQUISITES.md).
 
 > If you plan using this component with projects generated by Angular CLI, please refer to the following article: [Using ADF with Angular CLI](https://github.com/Alfresco/alfresco-ng2-components/wiki/Angular-CLI)
@@ -74,17 +76,17 @@ npm install ng2-alfresco-core
 
 ## Upload Directive
 
-Allows your components or common HTML elements reacting on File drag and drop in order to upload content. 
+Allows your components or common HTML elements reacting on File drag and drop in order to upload content.
 Used by attaching to an element or component.
 
 ### Basic usage
 
-The directive itself does not do any file management process, 
+The directive itself does not do any file management process,
 but collects information on dropped files and raises corresponding events instead.
 
 ```html
 <div style="width:100px; height:100px"
-     [adf-upload]="true" 
+     [adf-upload]="true"
      [adf-upload-data]="{ some: 'data' }">
     Drop files here...
 </div>
@@ -113,7 +115,7 @@ Directive supports several modes:
 - **drop** mode, where decorated element acts like a drop zone for files (**default** mode)
 - **click** mode, where decorated element invokes File Dialog to select files or folders.
 
-It is also possible combining modes together. 
+It is also possible combining modes together.
 
 ```html
 <div [adf-upload]="true" mode="['click']">...</div>
@@ -145,7 +147,7 @@ For the click mode you can provide additional attributes for the File Dialog:
 
 #### Drop mode
 
-For the moment upload directive supports only Files (single or multiple). 
+For the moment upload directive supports only Files (single or multiple).
 Support for Folders and `accept` filters is subject to implement.
 
 ### Events
@@ -162,7 +164,7 @@ The DOM event is configured to have `bubbling` enabled, so any component up the
 ```ts
 onUploadFiles(e: CustomEvent) {
     console.log(e.detail.files);
-    
+
     // your code
 }
 ```
@@ -669,7 +671,6 @@ class MyComponent {
 **Important note**: `addTranslationFolder` method redirects **all** languages to a new folder, you may need implementing multiple languages 
 or copying existing translation files to a new path.
 
-
 ## Renditions Service
 
 * getRenditionsListByNodeId(nodeId: string)
@@ -679,15 +680,6 @@ or copying existing translation files to a new path.
 
 ## Build from sources
 
-Alternatively you can build component from sources with the following commands:
-
-```sh
-npm install
-npm run build
-```
-
-## Build from sources
-
 You can build component from sources with the following commands:
 
 ```sh