changed img names

speakers/andre-castro/index.html

@@ -12,9 +12,9 @@ group: navigation
 <hr />
 <h2>Presenting with <a href="../lucia-dossin/">Lucia Dossin</a></h2>
 <h3>Workshop: Bibliotecha</h3>
-<img src="closed.png" width="300px" />
+<img src="bibliotecha_closed.png" width="300px" />
 <br/>
-<img src="opened.png" width="300px" />
+<img src="bibliotecha_opened.png" width="300px" />
 <p>Bibliotecha is a local offline network for distribution of digital texts, which allows small communities to build and share their electronic text collections.
 Bibliotecha relies on a small computer (a RaspberryPi) running open-source software to serve the ebooks over a local WIFI hotspot. Using the browser to connect to it, one is given the option to retrieve or donate texts.</p>
 

speakers/bruno-kruse/index.html

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 <h3>Prerequisites</h3>
 <p>Basic programming knowledge recommended. (JavaScript)</p>
 
-<img src="../carrie-kengle/687474703a2f2f692e696d6775722e636f6d2f4f5658353259622e6a7067.jpg" width="50%" />
+<img src="../carrie-kengle/ambient_networks.jpg" width="50%" />
 
 <h3>Materials</h3>
 <p>Bring $60 cash to purchase at the workshop, or bring your own:

speakers/carrie-kengle/index.html

@@ -31,7 +31,7 @@ group: navigation
 <h3>Prerequisites</h3>
 <p>Basic programming knowledge recommended. (JavaScript)</p>
 
-<img src="687474703a2f2f692e696d6775722e636f6d2f4f5658353259622e6a7067.jpg" width="50%" />
+<img src="ambient_networks.jpg" width="50%" />
 
 <h3>Materials</h3>
 <p>Bring $60 cash to purchase at the workshop, or bring your own: