updated ipynb to be compatible with ipython 4.0

Author: ksolan

highcharts/ipynb.py

@@ -10,7 +10,7 @@
     _ip = get_ipython()
 except:
     _ip = None
-if _ip and _ip.__module__.startswith('IPython'):
+if _ip and (_ip.__module__.startswith('IPython') or _ip.__module__.startswith('ipykernel')):
 
     def _print_html(chart):
         '''Function to return the HTML code for the div container plus the javascript
@@ -45,4 +45,4 @@ def _setup_ipython_formatter(ip):
             for chart_type in [Highchart, Highmap, Highstock]:
                 html_formatter.for_type(chart_type, _print_html)
 
-    _setup_ipython_formatter(_ip)
+    _setup_ipython_formatter(_ip)