.gitignore: Added example

Author: osipxd

examples/prism-ignore.html

@@ -0,0 +1,9 @@
+<h2>Comment</h2>
+<pre><code># Simple comment
+## Section
+### Header</code></pre>
+
+<h2>Entry</h2>
+<pre><code>file[1-3].txt
+.configs/**
+!.configs/shared.cfg</code></pre>