Cleanup ruby code via rubocop

This commit will add code cleanup as corrected
and alerted by rubocop. It also adds rules to
execute rubocop on Travis.

spec/unit/facter/java_patch_level_spec.rb

@@ -1,31 +1,25 @@
-require "spec_helper"
+require 'spec_helper'
 
-describe Facter::Util::Fact do
-  before {
+describe 'java_patch_level' do
+  before(:each) do
     Facter.clear
-  }
+  end
 
-  describe "java_patch_level" do
-    context "if java is installed" do
-      context 'returns java patch version extracted from java_version fact' do
-        before :each do
-          Facter.fact(:java_version).stubs(:value).returns('1.7.0_71')
-        end
-        it do
-          expect(Facter.fact(:java_patch_level).value).to eq("71")
-        end
-      end
+  context 'if java is installed returns java patch version extracted from java_version fact' do
+    before :each do
+      Facter.fact(:java_version).stubs(:value).returns('1.7.0_71')
     end
+    it do
+      expect(Facter.fact(:java_patch_level).value).to eq('71')
+    end
+  end
 
-    context "if java is not installed" do
-      context 'returns nil' do
-        before :each do
-          Facter.fact(:java_version).stubs(:value).returns(nil)
-        end
-        it do
-          expect(Facter.fact(:java_patch_level).value).to be_nil
-        end
-      end
+  context 'if java is not installed returns nil' do
+    before :each do
+      Facter.fact(:java_version).stubs(:value).returns(nil)
+    end
+    it do
+      expect(Facter.fact(:java_patch_level).value).to be_nil
     end
   end
 end