Add a note in the on-line Git book about installing the man pages?

Hi,

It seems the git man pages (or HTML pages) are not installed by default 
when you install git as described in the http://git-scm.com/book

I propose to add a note to 
http://git-scm.com/book/en/Getting-Started-Installing-Git along those lines:




Getting the git manpages from 
"https://code.google.com/p/git-core/downloads/list" and unpack them 
(supposing you installed your git into "/opt/git"):

TARGET=/opt/git
VERSION=`$TARGET/bin/git --version | awk '{print $3}' | cut -d '.' -f1-3`
wget "http://git-core.googlecode.com/files/git-manpages-${VERSION}.tar.gz"
mkdir "$TARGET/share/man"
tar xz -C "$TARGET/share/man" -f "git-manpages-${VERSION}.tar.gz"