Option to configure max_rows

[dylanross3]

It would be a nice addition to allow passing a max_rows parameter.

dx(df, max_rows=None)

This would essentially be a convenience mechanism so the user can avoid doing the following.

with pd.option_context('display.max_rows', None):
  dx(df)

The default value could potentially be None, but I think it's better to have users explicitly set that so they are more likely to realize the ramifications.