Added test route to flask (/ajax/testing) for when I enter my own username. This allows me to more rapidly test other functionalities without hitting Twitter API.
In showTweets function, append each tweet from json response object to #tweets div.
Still using canned tweets.
Use cannedtweets.txt for sample response in /tweets handler
Added embedded timeline widget from twitter to #tweets div.

This config enables overriding the user for whom tweets are shown. Config set using html attributes. Timeline appears as a link if user's timeline not available. Twitter widgets.js script included at bottom of body tag
Add twitter widget script to foot of body, inline Javascript for the moment. twttr method available from console.

Delete test.json file from /templates.
WIP - twttr.widgets.load() in getTweets function
Removed <a> twitter timeline HTML element from #tweets, replaced with dynamic timeline creation function wrapped in twttr.ready(). Successfully created timeline dynamically - on page load.

WIP: move createTimeline to an event handler that triggered by clicking on a bubble.
Embeds timeline using external variable screenName for screen name, on click of #detail.

Wrap event handler in twttr.ready() function. Creates timeline on click.