Moves Models into their own namespace - Ref #1315

spec/app/models/interesting_finding_spec.rb

@@ -1,4 +1,4 @@
-describe WPScan::InterestingFinding do
+describe WPScan::Model::InterestingFinding do
   it_behaves_like WPScan::References do
     subject(:finding) { described_class.new('http://e.org/file.php', opts) }
     let(:opts)        { { references: references } }