To start using BreezeDb library either clone the GitHub repository and copy the contents of the src folder over to your project's source folder or download the latest SWC file from the releases section and add it to your project's build path.
Verify that the library has been correctly installed by adding the following code and rebuilding your project:
import breezedb.BreezeDb;
trace("Using BreezeDb v" + BreezeDb.VERSION);
You should see a message with the version of the library you are using. At this point you are ready to setup your database.