updated links in readme

README.md

@@ -2,13 +2,13 @@
 # Hack
 ### A typeface designed for source code
 
-<a href="http://chrissimpkins.github.io/Hack/font-specimen.html"><img src="img/hack-specimen.png" alt="Hack-a monospaced sans-serif font for source code" width="728"></a>
+<a href="https://sourcefoundry.org/hack/"><img src="img/hack-specimen.png" alt="Hack-a monospaced sans-serif font for source code" width="728"></a>
 <br>
-<a href="http://chrissimpkins.github.io/Hack/font-specimen.html"><img src="img/c-mockup.png" alt="C source code example" width="728"></a>
+<a href="https://sourcefoundry.org/hack/"><img src="img/c-mockup.png" alt="C source code example" width="728"></a>
 <br>
-<a href="http://chrissimpkins.github.io/Hack/font-specimen.html"><img src="img/python-mockup.png" alt="Python source code example" width="728"></a>
+<a href="https://sourcefoundry.org/hack/"><img src="img/python-mockup.png" alt="Python source code example" width="728"></a>
 <br>
-<a href="http://chrissimpkins.github.io/Hack/font-specimen.html"><img src="img/js-mockup.png" alt="JavaScript source code example" width="728"></a>
+<a href="https://sourcefoundry.org/hack/"><img src="img/js-mockup.png" alt="JavaScript source code example" width="728"></a>
 
 
 ### About