Add plain bench

benchmark/plain.haml

@@ -0,0 +1,4 @@
+aaa#{hello}bbb
+%span aaa#{hello}bbb
+%span
+  aaa#{hello}bbb

benchmark/plain.rb

@@ -0,0 +1,3 @@
+def hello
+  'world'
+end

wercker.yml

@@ -12,14 +12,17 @@ build:
       name: basic.haml
       code: bin/bench bench -c benchmark/basic.haml
     - script:
-      name: tags.haml
-      code: bin/bench bench -c benchmark/tags.haml
+      name: old_attributes.haml
+      code: bin/bench bench -c benchmark/old_attributes.haml
+    - script:
+      name: plain.haml
+      code: bin/bench bench -c benchmark/plain.haml
     - script:
       name: real_sample.haml
       code: bin/bench bench -c benchmark/real_sample.haml
     - script:
-      name: old_attributes.haml
-      code: bin/bench bench -c benchmark/old_attributes.haml
+      name: tags.haml
+      code: bin/bench bench -c benchmark/tags.haml
     - script:
       name: minitest
       code: bundle exec rake test