'Read IERS-B table from a eopc04_iau2000.* file provided by IERS.
Parameters
file : str
full path to ascii file holding IERS-B data.
Defaults to package version, ``iers.IERS_B_FILE``.
readme : str
full path to ascii file holding CDS-style readme.
Defaults to package version, ``iers.IERS_B_README``.
data_start : int
starting row. Default is 14, appropriate for standard IERS files.
Returns
``IERS_B`` class instance'

@classmethod
def read(cls, file=None, readme=None, data_start=14):

    if (file is None):
        file = IERS_B_FILE
    if (readme is None):
        readme = IERS_B_README
    iers_b = Table.read(file, format=u'cds', readme=readme, data_start=data_start)
    return cls(iers_b.filled())
