adding MXTuning document

python/MXTuning.py

@@ -176,9 +176,9 @@ class MXTuning(Tuning):
       w,mag,phase = signal.bode(mdl,w)
       f=w/(2*np.pi)
       ax=fig.axes[0]
-      ax.semilogx(f, mag,'-k',lw=2)    # Bode magnitude plot
+      ax.semilogx(f, mag,'-k',lw=1)    # Bode magnitude plot
       ax=fig.axes[1]
-      ax.semilogx(f, phase,'-k',lw=2)  # Bode phase plot
+      ax.semilogx(f, phase,'-k',lw=1)  # Bode phase plot
       # tp print see also: print(np.poly1d([1,2,3], variable='s')), print(np.poly1d([1,2,3], r=True, variable='s'))