Update NfcBarcode documentation for Kovio.

    /**

     * Returns the barcode of an NfcBarcode tag.

     *

     * <p> Tags of {@link #TYPE_KOVIO} return 16 bytes:

     *     <ul>

     *     <p> The first byte is 0x80 ORd with a manufacturer ID, corresponding

     *       to ISO/IEC 7816-6.

     *     <p> The second byte describes the payload data format. Defined data

     *       format types include the following:<ul>

     *       <li>0x00: Reserved for manufacturer assignment</li>

     *       <li>0x01: 96-bit URL with "http://www." prefix</li>

     *       <li>0x02: 96-bit URL with "https://www." prefix</li>

     *       <li>0x03: 96-bit URL with "http://" prefix</li>

     *       <li>0x04: 96-bit URL with "https://" prefix</li>

     *       <li>0x05: 96-bit GS1 EPC</li>

     *       <li>0x06-0xFF: reserved</li>

     *       </ul>

     *     <p>The following 12 bytes are payload:<ul>

     *       <li> In case of a URL payload, the payload is encoded in US-ASCII,

     *            following the limitations defined in RF3987,

     *            {@see http://www.ietf.org/rfc/rfc3987.txt}</li>

     *       <li> In case of GS1 EPC daya, {@see http://www.gs1.org/gsmp/kc/epcglobal/tds/}

     *            for more details.</li></ul>

     *     <p>The last 2 bytes comprise the CRC.

     *     </ul>

     * <p>Does not cause any RF activity and does not block.

     *

     * @return a byte array containing the barcode

 * <ul>

 * <li>{@link MifareClassic}

 * <li>{@link MifareUltralight}

 * <li>{@link NfcBarcode}

 * <li>{@link NdefFormatable} must only be enumerated on tags for which this Android device

 * is capable of formatting. Proprietary knowledge is often required to format a tag

 * to make it NDEF compatible.