You can add leagues, big or small, to Sports Club Stats.
   It's free.
   It's easy.
   Just email import@sportsclubstats.com the:
      structure
      schedule
      and rules
   In a few minutes you'll get back a link to the league.
   Play around, have fun, you won't break anything.
   I look forward to seeing what you create.

Info about the various settings:
   https://docs.google.com/document/d/1-UneDNk6tkOrc_B-WBnGnc5KGiy2kttXC2fW8dR7QzM/edit?hl=en

For example, here is what created this league:

LeagueBegin
  League:     UEFA European Championship (EURO 2016)      (ID: 1a30) (Sort: League) (Playoffs: 16)
    Division: Group A                                     (ID: d1cu) (Sort: Conf) (Playoffs: 2)
      Team:   Albania                                     (ID: t1dfy)
      Team:   France                                      (ID: t1k4z)
      Team:   Romania                                     (ID: t1dh4)
      Team:   Switzerland                                 (ID: t1dhd)
    Division: Group B                                     (ID: d1cv) (Sort: Conf) (Playoffs: 2)
      Team:   England                                     (ID: t1dgb)
      Team:   Russia                                      (ID: t1dh5)
      Team:   Slovakia                                    (ID: t1dh9)
      Team:   Wales                                       (ID: t1dhg)
    Division: Group C                                     (ID: d1cw) (Sort: Conf) (Playoffs: 2)
      Team:   Germany                                     (ID: t1dgg)
      Team:   Northern Ireland                            (ID: t1dgz)
      Team:   Poland                                      (ID: t1dh1)
      Team:   Ukraine                                     (ID: t1dhf)
    Division: Group D                                     (ID: d1cx) (Sort: Conf) (Playoffs: 2)
      Team:   Croatia                                     (ID: t1dg7)
      Team:   Czech Republic                              (ID: t1dg9)
      Team:   Spain                                       (ID: t1dhb)
      Team:   Turkey                                      (ID: t1dhe)
    Division: Group E                                     (ID: d1cy) (Sort: Conf) (Playoffs: 2)
      Team:   Belgium                                     (ID: t1dg4)
      Team:   Italy                                       (ID: t1dgn)
      Team:   Republic of Ireland        (Rep of Ireland) (ID: t1dh3)
      Team:   Sweden                                      (ID: t1dhc)
    Division: Group F                                     (ID: d1cz) (Sort: Conf) (Playoffs: 2)
      Team:   Austria                                     (ID: t1dg1)
      Team:   Hungary                                     (ID: t1dgj)
      Team:   Iceland                                     (ID: t1dgk)
      Team:   Portugal                                    (ID: t1dh2)
  Kind: pro
  Sport: soccer
  Gender: male
  Country: UEFA
  State: 
  Level: A
  Season: 2016 (current: False)
  Author: Markus Paminger
  Note: 
  LotteryNote: 
LeagueEnd

SortBegin
Conf: Average Points, Average Points HeadToHead, Average GoalsDelta
HeadToHead, Average GoalsFor HeadtoHead, Average GoalsDelta, Average
GoalsFor, DrawLots

League: least PositionInParent, Average Points, Average GoalsDelta, Average
GoalsFor, DrawLots
SortEnd

RulesBegin
  PointsForWinInRegulation:  3
  PointsForWinInOvertime:  3
  PointsForWinInShootout:  3
  PointsForLossInRegulation:  0
  PointsForLossInOvertime:  0
  PointsForLossInShootout:  0
  PointsForTie:  1
  PercentOfGamesThatEndInTie:  0.25
  PercentOfGamesThatEndInOvertimeWin:  0
  PercentOfGamesThatEndInShootoutWin:  0
  HomeFieldAdvantage:  0.5
  WeightType:  Pythagorean
  WeightExponent:  1.4
  WhatDoYouCallATie:  draw
  WhatDoYouCallLottery:  lottery
  WhatDoYouCallPromoted:  Knockout Stage
  Promote:  16
  PromotePlus:  0
  PromotePlusPercent:  0.5
  WhatDoYouCallDemoted:  eliminated
  Demote:  8
  DemotePlus:  0
  DemotePlusPercent:  0
RulesEnd

GamesBegin
TeamListedFirst: home
6/10/16   Albania            0-1   Switzerland        (ID: g1qfsq)
6/10/16   France             2-1   Romania            (ID: g1pkkk)
6/11/16   England            1-1   Russia             (ID: g1pkkn)
6/11/16   Wales              2-1   Slovakia           (ID: g1pkkp)
6/12/16   Germany            2-0   Ukraine            (ID: g1pkkx)
6/12/16   Poland             1-0   Northern Ireland   (ID: g1pkm4)
6/13/16   Belgium            0-2   Italy              (ID: g1pkkr)
6/13/16   Rep of Ireland     1-1   Sweden             (ID: g1pkm7)
6/13/16   Spain              1-0   Czech Republic     (ID: g1pkmd)
6/13/16   Turkey             0-1   Croatia            (ID: g1pkmh)
6/14/16   Austria            0-2   Hungary            (ID: g1pkkq)
6/14/16   Portugal           1-1   Iceland            (ID: g1pkm6)
6/15/16   France             2-0   Albania            (ID: g1pkkw)
6/15/16   Romania            1-1   Switzerland        (ID: g1pkm9)
6/16/16   England            2-1   Wales              (ID: g1pkkv)
6/16/16   Russia             1-2   Slovakia           (ID: g1pkma)
6/17/16   Czech Republic     2-2   Croatia            (ID: g1pkku)
6/17/16   Germany            0-0   Poland             (ID: g1hc53)
6/17/16   Spain              3-0   Turkey             (ID: g1pkme)
6/17/16   Ukraine            0-2   Northern Ireland   (ID: g1pkmi)
6/18/16   Iceland            1-1   Hungary            (ID: g1pkm0)
6/18/16   Portugal           0-0   Austria            (ID: g1pkm5)
6/19/16   Belgium            3-0   Rep of Ireland     (ID: g1pkks)
6/19/16   Italy              1-0   Sweden             (ID: g1pkm2)
6/22/16   Croatia            2-1   Spain              (ID: g1pkkt)
6/22/16   Czech Republic     0-2   Turkey             (ID: g1hc6s)
6/22/16   Hungary            3-3   Portugal           (ID: g1pkky)
6/22/16   Iceland            2-1   Austria            (ID: g1pkkz)
6/22/16   Italy              0-1   Rep of Ireland     (ID: g1pkm1)
6/22/16   Northern Ireland   0-1   Germany            (ID: g1pkm3)
6/22/16   Romania            0-1   Albania            (ID: g1pkm8)
6/22/16   Russia             0-3   Wales              (ID: g1pkmb)
6/22/16   Slovakia           0-0   England            (ID: g1pkmc)
6/22/16   Sweden             0-1   Belgium            (ID: g1pkmf)
6/22/16   Switzerland        0-0   France             (ID: g1pkmg)
6/22/16   Ukraine            0-1   Poland             (ID: g1pkmj)
GamesEnd