Integrate JSON schema files

[fireproofsocks]

See http://json-schema.org/examples.html

• type defs (post_types)
• field defs
• metabox defs
• CCTM exported defs
• settings def (?)

Example Encoding

try {
    $string = $encoder->encode($data, '/path/to/schema.json');
} catch (ValidationFailedException $e) {
    // data did not match schema 
}

Example Decoding

try {
    $data = $decoder->decodeFile('/path/to/file.json', '/path/to/schema.json');
} catch (ValidationFailedException $e) {
    // data did not match schema 
}