gitconfig: no prompt when using the dt (difftool) alias.
added awesome print gem
load rakefiles from the subdirectories
adjusted logger format
Implemented more generic install task (creating the links to the config
files).
updated 'check software installs' task description.
tmux: bigger scroll buffer and more time to show messages.
vim: added difftop
vim: added easymotion by skwp which is different from the original by
using the double letter combination.
Testing submodule behaviour.