vim: Change the colorscheme from zenburn to base16-eighties

Signed-off-by: Henrique Camargo <henrique@henriquecamargo.com>
vim: Install vundle to manage plugins and installs CtrlP

Install vundle to manage plugins and to install the CtrlP Fuzzy Finder
plugin to open files using a fuzzy finder
git: Add default configuration

Add a default git configuration.

Signed-off-by: Henrique Camargo <henrique@henriquecamargo.com>
vim: Use 256 colors when running inside gnome-terminal

Gnome Terminal does not advertise support for 256 color. But we know it
supports, so use it.