Install Apache Tomcat for your platform. Using Homebrew works well for OS X.
To find the catalina $HOME directory:
$ catalina -h
On OS X, the output might include:
Using CATALINA_HOME: /usr/local/Cellar/tomcat/7.0.37/libexec
Clone this repository to the webapps
directory of CATALINA_HOME.
Start the Tomcat server:
$ catalina run
Assuming the default Tomcat settings and folder name of this repository, you should be able to access the application at
http://localhost:8080/COMP6006BugTracker/app/