Use non-pessimistic version specifiers, update gemspec fields, increm…

…ent version.

docx.gemspec

@@ -4,16 +4,17 @@ require 'docx/version'
 Gem::Specification.new do |s|
   s.name        = 'docx'
   s.version     = Docx::VERSION
+  s.licenses    = ['MIT']
   s.summary     = 'a ruby library/gem for interacting with .docx files'
-  s.description = s.summary
+  s.description = 'thin wrapper around rubyzip and nokogiri as a way to get started with docx files'
   s.authors     = ['Christopher Hunt', 'Marcus Ortiz', 'Higgins Dragon', 'Toms Mikoss', 'Sebastian Wittenkamp']
   s.email       = ['chrahunt@gmail.com']
   s.homepage    = 'https://github.com/chrahunt/docx'
   s.files       = Dir["README.md", "LICENSE.md", "lib/**/*.rb"]
 
-  s.add_dependency 'nokogiri', '~> 1.8.1'
-  s.add_dependency 'rubyzip',  '~> 1.2.1'
+  s.add_dependency 'nokogiri', '~> 1.8', '>= 1.8.1'
+  s.add_dependency 'rubyzip',  '~> 1.2', '>= 1.2.1'
 
-  s.add_development_dependency 'rspec'
-  s.add_development_dependency 'rake'
+  s.add_development_dependency 'rspec', '~> 3.7'
+  s.add_development_dependency 'rake', '~> 12.3'
 end

lib/docx/version.rb

@@ -1,3 +1,3 @@
 module Docx #:nodoc:
-  VERSION = '0.2.07'
+  VERSION = '0.3.0'
 end