Add Travis test 11

scripts/markdown-to-markua.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 
 # Markua doesn't know what to do with 4 backticks (````), so convert to 3:
-find manuscript -type f -name "*.md" -print0 | xargs -0 sed "s/````/```/g"
+find manuscript -type f -name "*.md" -print0 | xargs -0 sed -i "s/\`\`\`\`/\`\`\`/g"
 
 # Do nothing, yet. This is where the sed magic will go