Added a test for Brainstorm.

This is my first test addition! 

^^ I will now do my best to create tests for all new greater card groups for Wagic 0.12.1.

projects/mtg/bin/Res/test/_tests.txt

@@ -140,6 +140,7 @@ boggart_arsonists.txt
 borderland_behemoth.txt
 bottle_gnomes.txt
 bottle_gnomes2.txt
+brainstorm.txt
 bramblewood_paragon.txt
 brass_man.txt
 brass_man_i161.txt

projects/mtg/bin/Res/test/brainstorm.txt

@@ -0,0 +1,24 @@
+#Testing Brainstorm
+#Draw three cards, then put two cards from your hand on top of your library in any order.
+[INIT]
+FIRSTMAIN
+[PLAYER1]
+hand:brainstorm
+library:plains,forest,island
+manapool:{U}
+[PLAYER2]
+[DO]
+brainstorm
+choice 0
+plains
+choice 0
+forest
+[ASSERT]
+FIRSTMAIN
+[PLAYER1]
+hand:island
+library:plains,forest
+graveyard:brainstorm
+manapool{0}
+[PLAYER2]
+[END]