Add linter name to TAP YAML

Including this information in the YAML will make the output of these
errors and warnings easier for people to parse and work with.

lib/scss_lint/reporter/tap_reporter.rb

@@ -86,16 +86,25 @@ def format_ok(file, test_number)
     def format_not_ok(lint, test_number)
       location = lint.location
       test_line_description = "#{lint.filename}:#{location.line}:#{location.column}"
-      test_line_description += " #{lint.linter.name}" if lint.linter
+
+      data = {
+        'message' => lint.description,
+        'severity' => lint.severity.to_s,
+        'file' => lint.filename,
+        'line' => lint.location.line,
+        'column' => lint.location.column,
+      }
+
+      if lint.linter
+        test_line_description += " #{lint.linter.name}" if lint.linter
+        data['name'] = lint.linter.name
+      end
+
+      data_yaml = data.to_yaml.strip.gsub(/^/, '  ')
 
       <<-EOS.strip
 not ok #{test_number} - #{test_line_description}
-  ---
-  message: #{lint.description}
-  severity: #{lint.severity}
-  file: #{lint.filename}
-  line: #{lint.location.line}
-  column: #{lint.location.column}
+#{data_yaml}
   ...
       EOS
     end

spec/scss_lint/reporter/tap_reporter_spec.rb

@@ -70,6 +70,7 @@
   file: not-ok1.scss
   line: 123
   column: 10
+  name: SCSSLint::Linter::PrivateNamingConvention
   ...
 not ok 3 - not-ok2.scss:20:2 SCSSLint::Linter::PrivateNamingConvention
   ---
@@ -78,6 +79,7 @@
   file: not-ok2.scss
   line: 20
   column: 2
+  name: SCSSLint::Linter::PrivateNamingConvention
   ...
 not ok 4 - not-ok2.scss:21:3 SCSSLint::Linter::PrivateNamingConvention
   ---
@@ -86,6 +88,7 @@
   file: not-ok2.scss
   line: 21
   column: 3
+  name: SCSSLint::Linter::PrivateNamingConvention
   ...
 ok 5 - ok2.scss
         EOS