Add instructions to maximize CPU and RAM of built VM

Default Vagrant images don't make very good build servers :)
Vagrant long ago dropped 1.8 support.

Sorry for top posting. Sent from mobile.
On Dec 14, 2014 8:50 AM, "Josef Šimánek" <notifications@github.com> wrote:

> In Vagrantfile
> <https://github.com/tjschuck/rake-compiler-dev-box/pull/19#discussion-diff-21795832>
> :
>
> >  Vagrant.require_version '>= 1.6'
> >
> >  Vagrant.configure('2') do |config|
> >    config.vm.box = 'hashicorp/precise64'
> > -  config.vm.provision :shell, :path => "bootstrap.sh"
> > +  config.vm.provision :shell, path: 'bootstrap.sh'
>
> That's the spirit. IMHO this is not syntax fix. But take it easy. This is
> just pedantic note. But I'm not sure if dropping 1.8 support is worth this
> change.
>
> —
> Reply to this email directly or view it on GitHub
> <https://github.com/tjschuck/rake-compiler-dev-box/pull/19/files#r21795832>
> .
>