Bootstrap is Bootstrap, its independent of Dreamweaver, although DW has integrated it into their product by introducing a User Interface to supposedly make it easier for those who have no coding knowledge.
However you dont need a particular version of DW to deploy Bootstrap you can just go to the Bootstrap website, link the Bootstrap js and css files, copy some components and paste them into any version of DW using code view.
Now is the time to learn a bit of simple coding, copy and pasting if you dont want to pay the monthly fee for what is just a snippets panel containing Bootstrap code. Make your own Bootstrap snippets, youre done!
Go to the link below copy and paste the links to the css and js file into your page
http://getbootstrap.com/getting-started/#download
You'll also need to copy and paste the link to the Jquery library into the page:
<script src="https://code.jquery.com/jquery-3.1.1.min.js" integrity="sha256-hVVnYaiADRTO2PzUGmuLJr8BLUSjGIZsDYGmIJLv2b8=" crossorigin="anonymous"></script>
Go to the Bootstrap components page, copy some code for what you require:
http://getbootstrap.com/components/
Try some of the Bootstrap components out:
Bootstrap Modals
If you are going to use Bootstrap you need to learn how it works to be able to change the display/presentation of the components by over-riding the default stying with some custom styling, using your own css.