DOC: set save count in 3 animation examples

Author: tacaswell

examples/animation/rain.py

@@ -67,5 +67,5 @@ def update(frame_number):
 
 
 # Construct the animation, using the update function as the animation director.
-animation = FuncAnimation(fig, update, interval=10)
+animation = FuncAnimation(fig, update, interval=10, save_count=100)
 plt.show()

examples/animation/strip_chart.py

@@ -61,6 +61,6 @@ def emitter(p=0.1):
 
 # pass a generator in "emitter" to produce data for the update func
 ani = animation.FuncAnimation(fig, scope.update, emitter, interval=50,
-                              blit=True)
+                              blit=True, save_count=100)
 
 plt.show()

examples/animation/unchained.py

@@ -69,5 +69,5 @@ def update(*args):
     return lines
 
 # Construct the animation, using the update function as the animation director.
-anim = animation.FuncAnimation(fig, update, interval=10)
+anim = animation.FuncAnimation(fig, update, interval=10, save_count=100)
 plt.show()