move documentation to main page

src/neuron.hxx

@@ -7,7 +7,7 @@
 
 #include <matrix.hxx>
 
-/** @main Neural Network with Hidden Layers
+/** @mainpage Neural Network with Hidden Layers
 
     @section neuro-intro Overview
 
@@ -101,6 +101,14 @@
     The output vector is then calculatd as:
     O = I × H<sub>1</sub> × H<sub>2</sub> × H<sub>…</sub> × H<sub>l+1</sub>
 
+    @code
+    const size_type i(4);
+    const size_type o(2);
+    NeuroNet<double, i, o> net;
+    Matrix<1, i> input(1.0, 2.0, 0.0, -1.0);
+    Matrix<1, o> output = net.propagate(input);
+    @endcode
+    
     @section beuro-backward Back Propagation