Added embed example.
Added animated plot using python threading to update it. Also added a minimal animated embed example in a standalone python file.
Merge branch 'master' into embed_example
Fixed default_root_url with a trailing slash.
Added new widgets embedding example and add one more slide with a widget to the flask slideshow app.
Styling changes.
Renamed examples and fixed names in readme.
Load the plot from server too.
Merge pull request #652 from damianavila/embed_example

Added embed example.