Update Travis build stuff.

.travis.yml

@@ -1,12 +1,13 @@
 ---
 language: ruby
 rvm:
-  - 2.3.1
-  - 2.2.3
-  - 2.1.6
+  - 2.4.0
+  - 2.3.3
+  - 2.2.6
+  - 2.1.9
   - 2.0.0
   - jruby-9.0.5.0
-  - jruby-9.1.5.0
+  - jruby-9.1.6.0
   - 1.9.3
   - 1.8.7
   - ree
@@ -20,12 +21,6 @@ matrix:
 gemfile:
   - Gemfile
 before_script:
-  - |
-    case "${TRAVIS_RUBY_VERSION}" in
-      rbx*)
-        gem install psych
-        ;;
-    esac
   - rake travis:before -t
 script: rake travis
 after_script:

Rakefile

@@ -14,7 +14,7 @@ Hoe.plugin :email unless ENV['CI'] or ENV['TRAVIS']
 spec = Hoe.spec 'minitar' do
   developer('Austin Ziegler', 'halostatue@gmail.com')
 
-  self.require_ruby_version '>= 1.8'
+  require_ruby_version '>= 1.8'
 
   self.history_file = 'History.md'
   self.readme_file = 'README.rdoc'
@@ -27,7 +27,7 @@ spec = Hoe.spec 'minitar' do
   extra_dev_deps << ['hoe-travis', '~> 1.2']
   extra_dev_deps << ['minitest', '~> 5.3']
   extra_dev_deps << ['minitest-autotest', ['>= 1.0.b', '<2']]
-  extra_dev_deps << ['rake', '~> 10.0']
+  extra_dev_deps << ['rake', '>= 10.0', '< 12']
   extra_dev_deps << ['rdoc', '>= 0.0']
 end