Fixed fixture loading on Windows.

tests/fixtures/__init__.py

@@ -1,7 +1,7 @@
 import os
+import codecs
 
 from tests import TESTS_ROOT
-from httpie.compat import bytes
 
 
 def patharg(path):
@@ -18,15 +18,17 @@ FILE_PATH_ARG = patharg(FILE_PATH)
 BIN_FILE_PATH_ARG = patharg(BIN_FILE_PATH)
 JSON_FILE_PATH_ARG = patharg(JSON_FILE_PATH)
 
-with open(FILE_PATH) as f:
+
+with codecs.open(FILE_PATH, encoding='utf8') as f:
     # Strip because we don't want new lines in the data so that we can
     # easily count occurrences also when embedded in JSON (where the new
     # line would be escaped).
     FILE_CONTENT = f.read().strip()
-    if isinstance(FILE_CONTENT, bytes):
-        # Python < 3.0
-        FILE_CONTENT = FILE_CONTENT.decode('utf8')
+
+
+with codecs.open(JSON_FILE_PATH, encoding='utf8') as f:
+    JSON_FILE_CONTENT = f.read()
+
+
 with open(BIN_FILE_PATH, 'rb') as f:
     BIN_FILE_CONTENT = f.read()
-with open(JSON_FILE_PATH, 'rb') as f:
-    JSON_FILE_CONTENT = f.read()