update index and README with Mexico dates and venues

README.md

@@ -36,7 +36,9 @@ This schedule will be continually updated with links as registration opens. Chec
    Jun 06, 2017   Boston, MA @ General Assembly
    Jun 20, 2017   Washington DC @ General Assembly
    Jul  25, 2017   Salt Lake City, UT @ Lucid
-   Oct  24, 2017   Mexico City, Mexico @ Near Soft
+   Dec  05, 2017   Monterrey, Mexico @ Softtek
+   Dec  07, 2017   Guadalajara, Mexico @ Hacker Garage
+   Dec  09, 2017   Mexico City, Mexico @ NearSoft
 
    Cities will be listed and updated accordingly
    Materials from the events will also be archived

index.html

@@ -66,7 +66,9 @@ help support Mozilla.
           <li><strong>Jul 27, 2017</strong>: Denver, CO @ Galvanize</li>
           <li><strong>Sept 07, 2017</strong>: Tel Aviv, Israel @ Facebook</li>
           <li><strong>Sept 27, 2017</strong>: St Louis, MO @ StrangeLoop</li>
-          <li><strong>Oct 24, 2017</strong>: Mexico City, Mexico @ Near Soft</li>
+          <li><strong>Dec 05, 2017</strong>: Monterrey, Mexico @ Softtek</li>
+          <li><strong>Dec 07, 2017</strong>: Guadalajara, Mexico @ Hacker Garage</li>
+          <li><strong>Oct 09, 2017</strong>: Mexico City, Mexico @ NearSoft</li>
         </ul>
       </section>
       <section>