Fixes several broken imports

Author: GraylinKim

sc2reader/__init__.py

@@ -2,6 +2,7 @@
 
 from mpyq import MPQArchive
 from config import DefaultConfig
+from utils import read_header
 
 def read(location,config=DefaultConfig()):
     if not os.path.exists(location):

test_replays/test_all.py

@@ -8,7 +8,6 @@
 sys.path.insert(0, os.path.normpath(os.path.join(os.path.dirname(os.path.abspath(__file__)),"../")))
 
 import sc2reader
-from sc2reader import Replay
 from sc2reader.exceptions import ParseError
 
 # Parsing should fail for an empty file.