title: read block classic NFC
body: <p>how to read data from sector 1?authenticate is true, I get exception with IOException("transceive failed").</p>
  
  <pre><code>private String readSector() {   
      byte [] array={(byte)0xD3,(byte)0xF7,(byte)0xD3,(byte)0xF7,(byte)0xD3,(byte)0xF7};
      byte[] data = null;
      final ByteArrayBuffer b = new ByteArrayBuffer(mMaxSize);
      String sb=new String();
      boolean succes = false;
      try {
          mClassic.connect();
          succes = mClassic.authenticateSectorWithKeyA(1, array);
          if (succes) {
              b.append(mClassic.readBlock(3), 1, 16);
              data = b.toByteArray();
          }
          else
               sb+="Authentication failed";
          mClassic.close();
      catch (final TagLostException tag) {
          tag.printStackTrace();
          sb+="Tag Lost";
      }
      catch (final IOException e) {
          e.printStackTrace();
          sb+="IOEception";
      }
  }
  </code></pre>