doc(general): add target blank to external links

docs/assets/articles/index.md

@@ -1,7 +1,7 @@
 Nebular is a set of essential modules for your next Angular application.
 Its primary goal is to assemble together and connect the most awesome features and libraries creating an efficient ecosystem to speed up and simplify the development.
 
-In simpler words, Nebular is a set of generic modules (components, services & styles) helping you to solve generic tasks easier and focus on business logic.
+In simpler words, Nebular is a set of modules (components, services & styles) helping you to solve generic tasks easier so that you can focus on business logic.
 <hr class="section-end">
 
 <div class="note note-info">
@@ -28,7 +28,17 @@ What is included:
 - *@nebular/acl* - module for roles and permissions management. Coming soon.
 - *@nebular/dashboard* - module for draggable/resizable dashboards creation. Coming soon.
 - *@nebular/data* - application data & state management. Coming soon.
-- **Admin dashboard starter kit** [ngx-admin](https://github.com/akveo/ngx-admin) - application based on Nebular modules with beautiful IOT components.
+- **Admin dashboard starter kit <a href="https://github.com/akveo/ngx-admin" target="_blank">ngx-admin</a>** - application based on Nebular modules with beautiful IOT components.
+<hr class="section-end">
+
+## The purpose
+
+There are a lot of awesome front-end frameworks out there these days. 
+They provide a massive quantity of useful features making our lives more comfortable. 
+Our intention is not to create a new one as we are pretty much aware of the complexity and amount of work developers put on their creations. 
+But as developers, we feel that nowadays front-end development is disjointed. 
+You have to search for libraries, go through the different installation process, everything looks different, and sometimes it's just annoying that you can't just sit and start going. 
+That's why we are on a mission to assemble together the most useful modules and libraries, join them with a unified application and graphical interface creating a great toolkit for easier setup.
 <hr class="section-end">
 
 ## Assumptions
@@ -37,9 +47,9 @@ This documentation assumes that you are already familiar with JavaScript/TypeScr
 <hr class="section-end">
 
 ## Looking for ng2-admin?
-It's not gone and still supported! The ng2-admin is still available at ([Github branch](https://github.com/akveo/ng2-admin/tree/ng2-admin)).
+It's not gone and still supported! The ng2-admin is still available at <a href="https://github.com/akveo/ng2-admin/tree/ng2-admin" target="_blank">GitHub branch</a>.
 <hr class="section-end">
 
 ## Have questions?
-Didn't find something here? Look through the issues https://github.com/akveo/nebular/issues or simply drop us a line at <a href="mailto:[email protected]">[email protected]</a>.
+Didn't find something here? Look through the <a href="https://github.com/akveo/nebular/issues" target="_blank">issues</a> or simply drop us a line at <a href="mailto:[email protected]">[email protected]</a>.
 <hr class="section-end">

docs/assets/articles/install-into-existing.md

@@ -1,4 +1,4 @@
-If you don't have any code yet, please consider checking [Angular CLI](https://cli.angular.io/) documentation for help creating your app.
+If you don't have any code yet, please consider checking <a href="https://cli.angular.io" target="_blank">Angular CLI</a> documentation for help creating your app.
 In case you want to start based on our ngx-admin starter kit, please check out [Based on Starter Kit (ngx-admin)](#/docs/installation/based-on-starter-kit-ngxadmin) article.
 
 <div class="note note-info">

docs/assets/articles/install-starter-kit.md

@@ -1,4 +1,4 @@
-Starting Nebular from [ngx-admin](https://github.com/akveo/ngx-admin/) starter kit is the easiest way to run your first Nebular application. 
+Starting Nebular from <a href="https://github.com/akveo/ngx-admin/" target="_blank">ngx-admin</a> starter kit is the easiest way to run your first Nebular application. 
 
 Please note, that **ngx-admin** is just a frontend application. Backend integration can be done relatively simple, but you should be aware that all the data is mocked using JavaScript objects. 
 If you want the data to be dynamic, you should consider developing a backend integration by your own. 
@@ -8,12 +8,18 @@ The Nebular team doesn't consider providing generic integration layer as a part
 ## Install tools
 
 To install ngx-admin on your machine you need to have the following tools installed:
-- Git - https://git-scm.com/
-- Node.js - https://nodejs.org. Please note the **version** should be **>=7**
+- Git - <a href="https://git-scm.com" target="_blank">https://git-scm.com</a>
+- Node.js - <a href="https://nodejs.org" target="_blank">https://nodejs.org</a>. Please note the **version** should be **>=7**
 - Npm - Node.js package manager, comes with Node.js. Please make sure npm **version** is **>=5**
 - You might also need some specific native packages depending on your operating system like `build-essential` on Ubuntu
 
-Please note that **it is not possible** to build ngx-admin **without these tools** and it will not be possible because of the way how Angular is built.
+<div class="note note-warning">
+  <div class="note-title">Warning!</div>
+  <div class="note-body">
+    Please note that **it is not possible** to build ngx-admin **without these tools** and it will not be possible because of the way how Angular is built.
+  </div>
+</div>
+<hr class="section-end">
 <hr class="section-end">
 
 ## Download the code
@@ -42,7 +48,7 @@ To run a local copy in development mode, execute:
 npm start
 ```
 
-Go to http://0.0.0.0:4200 or http://localhost:4200 in your browser.
+Go to <a href="http://0.0.0.0:4200" target="_blank">http://0.0.0.0:4200</a> or <a href="http://localhost:4200" target="_blank">http://localhost:4200</a> in your browser.
 <hr class="section-end">
 
 To run the local copy in a production mode and build the sources, execute:

docs/assets/articles/start.md

@@ -1,4 +1,4 @@
-Nebular is a set of modules for [Angular](https://angular.io/) framework. Despite it is not required to know Angular framework to set up your first Nebular project, it is highly recommended to go through the Angular tutorial beforehand and be familiar with basic Angular concepts.
+Nebular is a set of modules for <a href="https://angular.io/" target="_blank">Angular</a>. Despite it is not required to know Angular framework to set up your first Nebular project, it is highly recommended to go through the Angular tutorial beforehand and be familiar with basic Angular concepts.
 <hr class="section-end">
 
 ## Quickstart tutorials