No scatterplot for regplot() for iPython notebook inline plotting or saving figures

[dylanfried]

Note: This may be an upstream bug.

For simple regplots (that work fine when run from the command line or a script), when either: 1) plotted inline in an iPython notebook or 2) saved to disk using the matplotlib save, the scatter points don't show up. The regression line still appears, but there are no scatter points to be found.

Reproducing the bug
This pops up a matplotlib window with a graph that looks correct. When saving the png to disk, however, the scatter points also disappear.

import seaborn as sns
import matplotlib.pyplot as plt
iris = sns.load_dataset("iris")
fg = sns.regplot("sepal_length","sepal_width",iris)
plt.show()

However, when doing this in an iPython notebook and adding the inline plotting, the scatter points don't show up:

%matplotlib inline
import seaborn as sns
import matplotlib.pyplot as plt
iris = sns.load_dataset("iris")
fg = sns.regplot("sepal_length","sepal_width",iris)

[mwaskom]

See #344