Adding live stream twitter feeds to webpage has been made easy with the new widget function in Twitter.
First, log into your twitter account and under settings, choose Create Widget. There are four options: specific user, etc… For an event, the search option is the best. Define a hashtag, or the hashtag you will define for a certain event, and then create the widget. Once the widget is created, copy the html code.
The second step: embed that code into a webpage.
That is all there is. Make sure to keep the widget under your twitter account.