Add hook so that output from R Markdown chunks which generate a warning or an error has the class "error" and appears in red font.
Add hook so that output from R Markdown chunks which generate a warning
or an error has the class "error" and appears in red font.

https://github.com/swcarpentry/lesson-example/blob/gh-pages/LAYOUT.md#topics

easyreporting/fmri_reporting,easyreporting/fmri_reporting,easyreporting/fmri_reporting,easyreporting/fmri_reporting,easyreporting/fmri_reporting,easyreporting/fmri_reporting