Add objects (#3)

* Add objects

Signed-off-by: Ce Gao <ce.gao@outlook.com>

* Update

Signed-off-by: Ce Gao <ce.gao@outlook.com>

Author: gaocegege

reference/resetMatrix.html

@@ -38,6 +38,18 @@
         <td><h3>resetMatrix</h3></td>
     </tr>
 
+            <tr class=""><th scope="row">Examples</th><td>
+                    <div class="example">                <pre>size(100, 100, P3D)
+noFill()
+box(80)
+printMatrix()
+
+resetMatrix()
+box(80)
+printMatrix()
+</pre>
+            </div>
+                            </tr>
 
     <tr class="">
         <th scope="row">Description</th>

tutorials/index.html

@@ -70,6 +70,19 @@ <h1 class="large-header"><span class="black">Processing.R Tutorials.</span> A co
                         </p>
                         <p>Drawing simple shapes and using the coordinate system.</p>
                         <p>Level: Beginner</p>
+                    </div></td>
+                                    <td><div class="curated-item">
+                        <a href="objects/">
+                            <img src="objects/imgs/objects.jpg" width="223" height="72" alt="Preview image" title="Objects in Processing.R">
+                        </a>
+                        <p>
+                            <br />
+                            <a href="objects/">Objects in Processing.R</a>
+                            <br />
+                            by Shawn T. O'Neil
+                        </p>
+                        <p>The basics of object-oriented programming.</p>
+                        <p>Level: Intermediate</p>
                     </div></td>
                             </tr>
             </tbody>

tutorials/index.yml

@@ -1,3 +1,4 @@
 index:
   - gettingstarted
   - drawing
+  - objects

tutorials/objects/.property.yml

@@ -0,0 +1,5 @@
+image: objects.jpg
+title: Objects in Processing.R
+author: Shawn T. O'Neil
+introduction: The basics of object-oriented programming.
+level: Intermediate