update README

Author: claudioperez

README.md

@@ -1,10 +1,10 @@
 <p align="center">
   <a href="https://gallery.stairlab.io/">
-    <img src="https://veux.io/_static/images/stairlab_large.svg" alt="STAIRLab logo" width="200" height="165">
+    <img src="https://veux.io/_static/images/stairlab_large.svg" alt="PEER logo" width="200" height="165">
   </a>
 </p>
 
-<h3 align="center">STAIRLab Examples</h3>
+<h3 align="center">OpenSees Examples</h3>
 
 
 <p align="center">