Create list for players in the original second tournament

Author: marcharper

README.rst

@@ -36,8 +36,7 @@ Running an instance of Axelrod's second tournament:
 
    >>> import axelrod_fortran as axlf
    >>> import axelrod as axl
-   >>> players = [axlf.Player(name) for name in axlf.characteristics.keys()
-   >>>            if axlf.characteristics[name]["original_rank"] is not None]
+   >>> players = [axlf.Player(name) for name in axlf.second_tournament_strategies]
    >>> print(len(players), "players")
    62 players
    >>> tournament = axl.Tournament(players, repetitions=1, turns=200)

src/axelrod_fortran/__init__.py

@@ -1,4 +1,5 @@
 __version__ = "0.1.0"
 
 from .player import Player
-from .strategies import characteristics, all_strategies
+from .strategies import (all_strategies, characteristics,
+                         second_tournament_strategies)

src/axelrod_fortran/strategies.py

@@ -349,3 +349,8 @@
 }
 
 all_strategies = characteristics.keys()
+
+# Players from Axelrod's second tournament.
+second_tournament_strategies = [
+    name for name in characteristics.keys()
+    if characteristics[name]["original_rank"] is not None]