function readJSONFiles( files ) {
	var fpath;
	var out;
	var ext;
	var f;
	var i;

	out = {};
	for ( i = 0; i < files.length; i++ ) {
		f = files[ i ];
		fpath = resolve( DATA_DIR, f );
		ext = extname( f );
		out[ replace( f, ext, '' ) ] = readJSON( fpath, OPTS );
	}
	return out;
}
Reads a list of JSON files.

@private
@param {StringArray} files - file list
@returns {Object} file contents