Update file layout

[hancush]

new layout, who dis?

class MunicipalResultParser(FixedWidthParser):
    """
    Summary Export File Format           Length    Column Position

    Record type                          1         1
    Global contest order                 5         2-6
    Global choice order                  5         7-11
    # Completed precincts                5         12-16
    Votes                                7         17-23
    Contest Total registration           7         24-30
    Contest Total ballots cast           7         31-37
    Contest Name                        70         38-107
    Choice Name                         50         108-157
    Choice Party Name                   50         158-207
    Choice Party Abbreviation            3         208-210
    District Type Name                  50         211-260
    District Type Global Order           5         261-265
    # of Eligible Precincts              5         266-270
    Vote For                             2         271-272

    Source: https://chicagoelections.gov/results/ap/SummaryExportFormat.xls
    """
    record_type = OneIndexedFixedWidthField(1, 1, transform=int)
    contest_code = OneIndexedFixedWidthField(2, 5, transform=int)
    candidate_number = OneIndexedFixedWidthField(7, 5, transform=int)
    precincts_reporting = OneIndexedFixedWidthField(12, 5, transform=int)
    vote_total = OneIndexedFixedWidthField(17, 7, transform=int)
    race_total_registration = OneIndexedFixedWidthField(24, 7, transform=int)
    race_total_ballots_cast = OneIndexedFixedWidthField(31, 7, transform=int)
    race_name = OneIndexedFixedWidthField(38, 70)
    candidate_name = OneIndexedFixedWidthField(108, 50, transform=replace_single_quotes)
    party = OneIndexedFixedWidthField(158, 50)
    party_abbreviation = OneIndexedFixedWidthField(208, 3)
    reporting_unit_name = OneIndexedFixedWidthField(211, 50)
    reporting_unit_code = OneIndexedFixedWidthField(261, 5, transform=int)
    precincts_total = OneIndexedFixedWidthField(266, 5, transform=int)
    vote_for = OneIndexedFixedWidthField(271, 2, transform=int)

Update the summary module and README.