text: Title: ValueError: cannot specify integer `bins` when input data contains infinity [BUG]
  Body: Trying to open a dataframe from a .csv that contains numpy.inf values fails with this error:
  
  ```
  import lux, pandas
  df = pandas.read_csv('filepath')
  ```
  ```
  C:\Users\???\anaconda\envs\base_up_to_date\lib\site-packages\IPython\core\formatters.py:918: UserWarning:
  Unexpected error in rendering Lux widget and recommendations. Falling back to Pandas display.
  Please report the following issue on Github: https://github.com/lux-org/lux/issues 
  
  C:\Users\???\anaconda\envs\base_up_to_date\lib\site-packages\lux\core\frame.py:632: UserWarning:Traceback (most recent call last):
    File "C:\Users\???\anaconda\envs\base_up_to_date\lib\site-packages\lux\core\frame.py", line 594, in _ipython_display_
      self.maintain_recs()
    File "C:\Users\???\anaconda\envs\base_up_to_date\lib\site-packages\lux\core\frame.py", line 436, in maintain_recs
      custom_action_collection = custom_actions(rec_df)
    File "C:\Users\???\anaconda\envs\base_up_to_date\lib\site-packages\lux\action\custom.py", line 76, in custom_actions
      recommendation = lux.config.actions[action_name].action(ldf)
    File "C:\Users\???\anaconda\envs\base_up_to_date\lib\site-packages\lux\action\correlation.py", line 50, in correlation
      vlist = VisList(intent, ldf)
    File "C:\Users\???\anaconda\envs\base_up_to_date\lib\site-packages\lux\vis\VisList.py", line 43, in __init__
      self.refresh_source(self._source)
    File "C:\Users\???\anaconda\envs\base_up_to_date\lib\site-packages\lux\vis\VisList.py", line 336, in refresh_source
      lux.config.executor.execute(self._collection, ldf, approx=approx)
    File "C:\Users\???\anaconda\envs\base_up_to_date\lib\site-packages\lux\executor\PandasExecutor.py", line 146, in execute
      PandasExecutor.execute_2D_binning(vis)
    File "C:\Users\???\anaconda\envs\base_up_to_date\lib\site-packages\lux\executor\PandasExecutor.py", line 387, in execute_2D_binning
      vis._vis_data["xBin"] = pd.cut(vis._vis_data[x_attr], bins=lux.config.heatmap_bin_size)
    File "C:\Users\???\anaconda\envs\base_up_to_date\lib\site-packages\pandas\core\reshape\tile.py", line 244, in cut
      "cannot specify integer `bins` when input data contains infinity"
  ValueError: cannot specify integer `bins` when input data contains infinity
  ```