Add `update_wrapper` method to preserve argspecs for decorated functions so that things like pytest fixtures will continue to work
Clean up
Remove unnecessary check on wrapper argspec
Explicit Error Mocking

Custom exception can be thrown when requesting a mocked endpoint.
Merged dropbox:master into ryaanwells:master
Updated error mocking to overload body variable
Readme has description of error mocking.
Remove unnecessary unicode conversion in callbacks
Ensure body is always bytes + fix test assertion
allow to use responses as context manager
Merge pull request #36 from ticosax/responses-as-context-manager

allow to use responses as context manager
Merge pull request #35 from benemery/master

Remove unnecessary unicode conversion in callbacks
Merge pull request #22 from ryaanwells/master

Explicit Error Mocking
Merge branch 'master' of https://github.com/mattupstate/responses into mattupstate-master

Conflicts:
	responses.py
	test_responses.py
Merge branch 'mattupstate-master'
Lint
0.3.0
Remove --use-mirrors
Correct Python 3 support within update_wrapper