update settings import
Merge pull request #49 from getsentry/master

Update settings import for 6.0 compatibility
add safety net for auth_providers setting
bind 0.8 to the 6.0 sentry release
Small fix to work with PyPy
Merge pull request #51 from bpbp-boop/master

Small fix to work with PyPy
Add proxy ability.

Added support for unix based http_proxy and https_proxy environmental
varaibles.