use momentjs for nice dates
Creating overall structure and organization.
Work on notebook docs.
Working on notebook docs.
Moving over new interact tutorial.
Pulling content from ipython-in-depth.
Remove placement tutorial,
Code will move into styling tutorial
Removed alignment tutorial,
Code will be moved into styleing tutorial
renamed:    Custom Widgets.ipynb -> Date Picker Widget.ipynb
Added widget list
renamed:    Widget Styles.ipynb -> Widget Styling.ipynb
Widget styling updates for pydata2014
Updated widget events for pydata2014
Updated basics notebook for pydata2014
Added custom widget tutorial examples
Adding moved content.
Pulling in content and rewriting from ipython-in-depth.
Moving things around.
Moving UI and rm Dashboard nb.
More work on notebook tutorials.