Handle case where context has no user identifier

Author: Tom

feature_flipper/templatetags/feature_flipper.py

@@ -57,4 +57,4 @@ def _get_value(self, key, context):
             return key[1:-1]
         if key in string.digits:
             return int(key)
-        return context[key]
+        return context.get(key, False)

setup.py

@@ -12,7 +12,7 @@
     author_email='[email protected]',
     description='A simple, customisable, feature flipper',
     url='https://github.com/mypebble/django-feature-flipper.git',
-    version='0.0.7',
+    version='0.0.8',
     packages=find_packages(),
     license='MIT',
     long_description=LONG_DESCRIPTION,