Added detail in doc on how to build the documentation

Sebastiano Merlino · Sebastiano Merlino · commit 27a60128bf38 · 2015-02-06T00:32:22.000Z
diff --git a/README.md b/README.md
@@ -149,6 +149,7 @@ involves running
 > ../configure  
 > make  
 > make install  
+> make doxygen-doc # if you want to build documentation
 
 Optional parameters to configure script
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