remove default values from gemspec

@bf4

 - remove values that are the default
 - simplify version requirement
works fine, using it myself on a bunch of gems

it's already using Dir.glob("lib/**/*") below, so that would blow up anyway


On Thu, Jul 24, 2014 at 2:51 PM, Jeremy Kemper <notifications@github.com>
wrote:

> In mail.gemspec:
>
> > @@ -1,18 +1,15 @@
> > -lib_dir = File.expand_path('../lib', __FILE__)
> > -$:.unshift lib_dir unless $:.include? lib_dir
> > -require 'mail/version'
> > +require './lib/mail/version'
>
> Assumes that Dir.pwd is the same dir that the gemspec lives in. Can use File.expand_path('../lib/mail/version',
> __FILE__) instead.
>
> —
> Reply to this email directly or view it on GitHub
> <https://github.com/mikel/mail/pull/748/files#r15375409>.
>