Adding missing instructions

So I followed the directions for creating a new content type and was successful, however I had the unexpected result of having the type I was sub-classing / extending (in this case `apostrophe-blog`) overridden in the admin menu bar.  I was extending it but had trouble with adding it's menu in `outerLayout.html` and added `{{ aposCaseMenu(permissions) }}` but node was complaining `unable to call aposCaseMenu which is undefined of falsy`.  Poking around I found that `/node_modules/apostrophe-blog/` has a file called `index.js` where a property called `menuName` was defined which was the missing link.