upgrade libcloud to 0.18.0, and fix upload of FileStorage object

flask_cloudy.py

@@ -308,7 +308,7 @@ class Storage(object):
             raise InvalidExtensionError("Invalid file extension: '.%s' " % extension)
 
         if isinstance(file, FileStorage):
-            obj = self.container.upload_object_via_stream(iterator=file,
+            obj = self.container.upload_object_via_stream(iterator=file.stream,
                                                           object_name=name,
                                                           extra=extra)
         else:
@@ -575,4 +575,4 @@ class Object(object):
         :return:
         """
         warnings.warn("DEPRECATED: flask_cloudy.Object.short_url has been deprecated, use flask_cloudy.Object.url or flask_cloudy.Object.full_url")
-        return self.get_url()
+        return self.get_url()

setup.py

@@ -39,7 +39,7 @@ setup(
     packages=find_packages(),
     install_requires=[
         "Flask==0.10.1",
-        "apache-libcloud==0.17.0",
+        "apache-libcloud==0.18.0",
         "lockfile==0.10.2",
         "shortuuid==0.1",
         "six==1.9.0",