Don't have all spec markup using markdown when not using a .md file.

When I use the index.src.html spec file and use I can't understand from the examples how I add the:

.source_info .source_warn .source_doc .source_a_d .source_a_s .source_hl .source_a_hl

that are defined in https://sourcejs.com/docs/spec/

I tried doing a:

``` info
Text in here
\```

But it didn't work (I really wish there was an easy way to add markdown into markdown, excuse the \ )

also would it be better if they were in the format of .sourcejs-info, sourcejs-warn, etc? Which also begs the question should the code blocks be sourcejs-css instead of src-css to keep it all consistent? It would be great if somebody like a BA with no coding knowledge would be able write all the spec text using MD