git: replace git-pretty-log command with alias
git: sort gitconfig
utils: remove git-ignore command

utils: remove deleted symlink
vim: fix string quotation
git: move git-current-branch command
dot: add package argument
vim: no need to clean
rxvt: rename Xresources to Xdefaults

Since rxvt looks for a file named Xdefaults at startup the call to xrdb is
redudant and can therefor be removed.
git: change pretty log colors
Rename install script to pkgbuild
xorg: add xorg-xbacklight dependency
dot: add verbose flag
vim: treat README as a text file
Update README