code: function littleEndianToInt8(data, offset)
  {
  	var x = littleEndianToUint8(data, offset)
  	if (x & 0x80) x = x - 256
  	return x
  }
docs: Interpret byte buffer as little endian 8 bit integer.
  Returns converted number.
  @param {ArrayBuffer} data - Input buffer.
  @param {number} offset - Start of data.
  @return Converted number.
  @public