Add links.org to testing/examples/

This file will help test various links type and the way they are
exported in various backends.

testing/examples/links.org

@@ -0,0 +1,28 @@
+#+TITLE: Testing various links types
+
+* Plain links
+
+- http://orgmode.org
+- [[http://orgmode.org][Org mode website]]
+- mailto:bzg@gnu.org
+
+* Links to files
+
+- file:///home/
+- [[file:normal.org][normal.org]]
+- [[file:normal.org::3][normal.org (third line)]]
+- file:normal.org::example
+- file:normal.org::* top
+- id:eaefc396-8943-4666-be6a-d5a1dbb05480
+
+* External links
+  :PROPERTIES:
+  :ID:       eaefc396-8943-4666-be6a-d5a1dbb05480
+  :END:
+
+- info:Org
+- [[info:org:External links]]
+- [[shell:ls -l]]
+- elisp:org-agenda
+- [[elisp:(find-file-other-frame "normal.org")]]
+