Python 3 fixes

Author: Bruce Stringer

fleece/httperror.py

@@ -1,4 +1,7 @@
-from BaseHTTPServer import BaseHTTPRequestHandler
+try:
+    from BaseHTTPServer import BaseHTTPRequestHandler
+except ImportError:
+    from http.server import BaseHTTPRequestHandler
 
 
 class HTTPError(Exception):

fleece/raxauth.py

@@ -1,6 +1,6 @@
 import requests
 
-from httperror import HTTPError
+from fleece.httperror import HTTPError
 
 
 def authenticate():

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py27,style
+envlist = py27,py34,style
 
 [testenv]
 install_command = pip install -U {opts} {packages}
@@ -16,4 +16,4 @@ commands =
     flake8 fleece setup.py --statistics --exclude tests
     flake8 tests --statistics --ignore D100,D101,D102
     # TODO(BS): Turn pylint back on once things get cleaned up.
-    # pylint fleece setup.py
+    # pylint fleece setup.py