OpenELEC is best solution for making a Raspberry Pi into a full fledged Media Center

Installing Fusion plug-in for KODI - to watch latest movies and tv shows

In KODI, goto SYSTEM - File Manager

click "Add source"
In Path, type in "http://fusion.tvaddon.ag/"
Name the media Source as "fusion"

Goto SYSTEM - Settings - Add-ons,

click on "Install from zip file"
click on "fusion"
click on "start-here"
click on "plugin.video.hubwizard-x.x.x.zip"

Goto PROGRAM

click "Config Wizard" - select OS or device

Media Center - OpenELEC