Keras: Tensorboard logs not being written

[bnaul]

Since https://github.com/fchollet/keras/commit/93b7dd99158ddbe99a299606d55f495629556c90, logs aren't actually being written beyond the initial value; this makes sense since the writer is being closed after the first epoch. Perhaps this change belongs in on_train_end instead?

Before https://github.com/fchollet/keras/commit/93b7dd99158ddbe99a299606d55f495629556c90:

After:

[fchollet]

I fixed it, thanks.