Disable click 5's unicode warnings

I'm using the unicode literals intentionally, so this is annoying.

piptools/click.py

@@ -0,0 +1,6 @@
+from __future__ import absolute_import
+
+import click
+click.disable_unicode_literals_warning = True
+
+from click import *  # noqa

piptools/locations.py

@@ -1,7 +1,7 @@
 import os
 from shutil import rmtree
 
-from click import secho
+from .click import secho
 from pip.utils.appdirs import user_cache_dir
 
 # The user_cache_dir helper comes straight from pip itself

piptools/logging.py

@@ -4,7 +4,7 @@
 
 import sys
 
-import click
+from . import click
 
 
 class LogContext(object):

piptools/resolver.py

@@ -6,7 +6,7 @@
 from functools import partial
 from itertools import chain, count
 
-import click
+from . import click
 from first import first
 from pip.req import InstallRequirement
 

piptools/scripts/compile.py

@@ -12,7 +12,7 @@
           'perhaps run `pip install --upgrade pip`?'.format(pip.__version__))
     sys.exit(4)
 
-import click  # noqa
+from .. import click  # noqa
 from pip.req import parse_requirements  # noqa
 
 from ..exceptions import PipToolsError  # noqa

piptools/scripts/sync.py

@@ -13,7 +13,7 @@
     sys.exit(4)
 
 import os  # noqa
-import click  # noqa
+from .. import click  # noqa
 from .. import sync  # noqa
 from ..exceptions import PipToolsError  # noqa
 from ..logging import log  # noqa

piptools/sync.py

@@ -1,6 +1,6 @@
 import collections
 
-import click
+from . import click
 import pip
 
 from .exceptions import IncompatibleRequirements

piptools/utils.py

@@ -4,7 +4,7 @@
 
 from itertools import groupby, chain
 
-from click import style
+from .click import style
 from first import first
 
 

piptools/writer.py

@@ -1,7 +1,7 @@
 import os
 from os.path import basename
 
-from click import unstyle
+from .click import unstyle
 
 from ._compat import ExitStack
 from .io import AtomicSaver