Add slides/intro_aim.md

2020/2020-02-15_gnuLinuxCourse/slides/intro_aim.md

+# Aims of the Tutorial
+  
+* Connect to a GNU/Linux server
+  * SSH, a de-facto standard for secure communication
+  
+  <!-- .element: class="fragment" -->
+  * For Windows users, using PuTTY
+  
+  <!-- .element: class="fragment" -->
+  * For Mac and GNU/Linux users, OpenSSH command line client
+  
+  <!-- .element: class="fragment" -->
+	
+<!-- .element: class="fragment" -->
+* Explore how to use the shell effectively
+  * We will use bash which is (almost) universaly presnt
+    - Steve Jobs did not like the license, but ...
+	  ```shell
+	  brew install bash`
+	  ```
+	  
+	<!-- .element: class="fragment" -->		
+
+<!-- .element: class="fragment" -->