Add support for install, release

Yes, it's part of bundler. 

If you run rake -T you see all available tasks. Here are rake install and rake release. 

Sent from my iPhone

> On 05 Oct 2014, at 03:49, Honza Javorek <notifications@github.com> wrote:
> 
> In Rakefile:
> 
> > @@ -4,6 +4,11 @@ require "rspec/core/rake_task"
> >  require 'yard'
> >  require 'cucumber'
> >  require 'cucumber/rake/task'
> > +begin
> > +      require 'bundler/gem_tasks'
> how does this add support to releasing? do gem_tasks automatically add some tasks for version bumping and releasing to rubygems?
> 
> —
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