added small glossary section

Author: aceslowman

src/templates/pages/learn/introduction-to-shaders.hbs

@@ -89,6 +89,13 @@ slug: learn/
  }
 <pre>
 
+
+<h2>Glossary </h2>
+<h3>Shader</h3>
+<p>A special graphics card program that can efficiently produce many visual effects and filters. </p>
+<h3>Uniform</h3>
+<p>A variable that is passed from your sketch to a shader</p>
+
     </main>
 
     {{> footer}}