Issue title: Modify readme including a reference to installing jupyter
 Issue body: Please consider upgrade the readme, 

Running the sample following the readme I got the error: 

`ImportError: No module named notebook.notebookapp`

I needed to 

`pip install jupyter`

to being able to run the sample.
 Comments: 
 Comment 0: Yeah, that would be heavily appreciated. 
Same annoying error here, same simple solution. 
Did cost 15 minutes of my very valuably time.
`pip install jupyter`
 Comment 1: Updated, thanks!
{'source': 'GithubIssues', 'repo_name_with_owner': 'o19s/relevant-search-book', 'issue_id': 212664474, 'repo_stars': 274.0}