Fixes code coverage.

Signed-off-by: crynobone <crynobone@gmail.com>
Add Parsedown as the default options for parsing markdown document.

Signed-off-by: crynobone <crynobone@gmail.com>
Fixes testcase.

Signed-off-by: crynobone <crynobone@gmail.com>
Merge pull request #11 from orchestral/feature/parsedown

Add parsedown as the default markdown parser.