Configuration Meld on Git

meld.bash

#install the Meld in your terminal
apt-get install meld

#Do Download of file git_mergetool_opt.sh
https://gist.github.com/felipebizz/a7a54b4f6a3e091925f5

#Let this file in  ~/ 

#open your file gitconfig and add this piece of code
[mergetool "git_mergetool_opt"]
    cmd = /home/felipe/git_mergetool_opt.sh "$BASE" "$LOCAL" "$REMOTE" "$MERGED"
    keepTemporaries = false
    trustExitCode = false
    keepBackup = false

[alias] df   = diff HEAD
[alias] dft  = difftool HEAD