Rename readme file to lowercase
Ensure render_template() always returns a string.

The calling methods will typically want to output the results, so an empty string is more appropriate than false.
Conform break indentation to coding standards
Ensure view is always defined
Introduce is_protected_meta().

It's important to make sure that post meta is properly classified as public or private, to prevent leaking sensitive information via the upcoming JSON API.
Make custom post type private by default.

It's better to start with it private, and then intentionally make it public if necessary. Otherwise it's easy to accidentally leave it public when the data should be kept private.
Match indentation for all array items
Remove trailing whitespace
Minor cleanup and style tweaks