Update specs.

.travis.yml

@@ -4,16 +4,19 @@ cache: bundler
 
 matrix:
   include:
-    - rvm: 2.3.6
     - rvm: 2.3
     - rvm: 2.4
     - rvm: 2.5
     - rvm: 2.6
+    - rvm: 2.6
+      os: osx
+    - rvm: 2.6
+      env: COVERAGE=BriefSummary,Coveralls
+    - rvm: truffleruby
     - rvm: jruby-head
       env: JRUBY_OPTS="--debug -X+O"
     - rvm: ruby-head
-    - rvm: rbx-3
   allow_failures:
+    - rvm: truffleruby
     - rvm: ruby-head
     - rvm: jruby-head
-    - rvm: rbx-3

localhost.gemspec

@@ -16,6 +16,7 @@ Gem::Specification.new do |spec|
 	spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
 	spec.require_paths = ["lib"]
 
+	spec.add_development_dependency "covered"
 	spec.add_development_dependency "bundler", "~> 1.16"
 	spec.add_development_dependency "rake", "~> 10.0"
 	spec.add_development_dependency "rspec", "~> 3.0"

spec/localhost_spec.rb

@@ -18,6 +18,8 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 # THE SOFTWARE.
 
+require 'localhost'
+
 RSpec.describe Localhost do
 	it "has a version number" do
 		expect(Localhost::VERSION).not_to be nil

spec/spec_helper.rb

@@ -1,6 +1,5 @@
 
-require "bundler/setup"
-require "localhost"
+require 'covered/rspec'
 
 require 'async/rspec'