Installation Instructions:
1. Install 'ant' :- sudo apt-get install ant
2. Install 'javac' :- sudo apt-get install default-jdk
3. Download the project 'DDG-Explorer' as zip or clone it into a local repository from github.
4. Build the src files present in the /src/ directory :- ant build-project
5. Create the executable jar file :- ant ddg-explorer
6. The working directory should now contain the jar :- ddg-explorer_{version}.jar
Tested on Ubuntu 16.04 LTS.