Move dependencies declaration to gemspec. Accept newer minor versions.

Gemfile

@@ -1,8 +1,4 @@
 source 'https://rubygems.org'
 
-gem 'thor', '~> 0.19.1'
-gem 'rugged', '~> 0.23.3', submodules: true
-gem 'rspec_junit_formatter', '0.2.2'
-
 # Specify your gem's dependencies in daun.gemspec
 gemspec

daun.gemspec

@@ -21,10 +21,18 @@ Gem::Specification.new do |spec|
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ['lib']
 
-  spec.add_development_dependency 'bundler', '~> 1.11'
-  spec.add_development_dependency 'rake', '~> 10.0'
-  spec.add_development_dependency 'rspec', '~> 3.0'
-  spec.add_development_dependency 'simplecov', '~> 0.11.2'
-  spec.add_development_dependency 'codeclimate-test-reporter', '~> 0.6.0'
-  spec.add_development_dependency 'rubocop', '~> 0.41.1'
+  spec.add_development_dependency 'bundler',                   '~> 1.11'
+  spec.add_development_dependency 'rake',                      '~> 10.0'
+  spec.add_development_dependency 'rspec',                     '~> 3.0'
+  spec.add_development_dependency 'simplecov',                 '~> 0.11', '>= 0.11.2'
+  spec.add_development_dependency 'codeclimate-test-reporter', '~> 0.6',  '>= 0.6.0'
+  spec.add_development_dependency 'rubocop',                   '~> 0.41', '>= 0.41.1'
+  spec.add_development_dependency 'rspec_junit_formatter',     '~> 0.2',  '>= 0.2.2'
+
+  spec.add_runtime_dependency     'json',                      '< 2' # json 2 requires ruby 2
+  spec.add_runtime_dependency     'thor',                      '~> 0.19', '>= 0.19.1'
+
+  # Can't pull 0.24.0 yet because this depends on the libgit2 version installed locally
+  # Also need to check on how we can enable `submodules: true` in gemspec
+  spec.add_runtime_dependency     'rugged',                    '~> 0.23.0'
 end