pystache/common.py: test failures in Windows due to CRs

* cleaned up from defunkt/pystache#193

Signed-off-by: Stephen L Arnold <[email protected]>

pystache/common.py

@@ -45,12 +45,15 @@ def read(path):
     # read() method returns byte strings (strings of type `str` in Python 2),
     # whereas in Python 3, the file object returns unicode strings (strings
     # of type `str` in Python 3).
-    f = open(path, 'rb')
-    # We avoid use of the with keyword for Python 2.4 support.
-    try:
-        return f.read()
-    finally:
-        f.close()
+    file_mode = 'r'
+    code_page = 'cp437'
+    if version_info < (3, ):
+        file_mode = 'rbU'
+
+    with open(path, file_mode) as f:
+        if version_info < (3, ):
+            return  f.read()
+        return f.read().encode()
 
 
 class MissingTags(object):