HELP ME ABOUT UPGRADE TO THE LASTEST VERSION

Hi for everbody, i'm new in this forum, someone know how to upgrade of version of librecad, i'm using ubuntu 14.04.3 LTS the version of my librecad is 2.0.2 i want the lastest version. what kind of comand i need to put for remove or uninstall

http://forum.librecad.org/2-1-0-Released-td5713850.html
or
https://github.com/LibreCAD/LibreCAD/wiki/Build-from-source