update rspec and specs

Gemfile

@@ -3,4 +3,4 @@ source "https://rubygems.org"
 gemspec
 gem 'rake'
-gem 'rspec', '~> 2.99'
+gem 'rspec', '~> 3.4'

spec/gitlab_emoji_spec.rb

@@ -5,28 +5,28 @@ describe Emoji do
   describe 'emojis' do
     let(:emojis) { Emoji.emojis }
-    it { emojis.should be_a(Hash) }
-    it { emojis.size.should be >= 1700 }
+    it { expect(emojis).to be_a(Hash) }
+    it { expect(emojis.size).to be >= 1700 }
   end
   describe 'emojis_by_moji' do
     let(:emojis) { Emoji.emojis_by_moji }
-    it { emojis.should be_a(Hash) }
-    it { emojis.size.should be_between(800, 1000) }
+    it { expect(emojis).to be_a(Hash) }
+    it { expect(emojis.size).to be_between(800, 1000) }
   end
   describe 'emojis_names' do
     subject { Emoji.emojis_names }
-    it { should be_a(Array) }
-    it { should include ("+1") }
+    it { is_expected.to be_a(Array) }
+    it { is_expected.to include("+1") }
   end
   describe 'emoji_filename' do
     subject { Emoji.emoji_filename("+1") }
-    it { should eq("1F44D") }
+    it { is_expected.to eq("1F44D") }
   end
   describe 'images_path' do

spec/spec_helper.rb

@@ -5,7 +5,6 @@
 #
 # See http://rubydoc.info/gems/rspec-core/RSpec/Core/Configuration
 RSpec.configure do |config|
-  config.treat_symbols_as_metadata_keys_with_true_values = true
   config.run_all_when_everything_filtered = true
   config.filter_run :focus