Merge pull request #3 from PeterScott/master

Add minimum version to protobuf library dependency
Bump version.
Update pb.py to the output from the current upstream protobuf .proto
Bump version to account for protobuf file change
Support setting attributes in the Event class
Merge pull request #6 from bmhatfield/protobuf-update

Updated Bernhard's Protobuf (pb.py) to the current Riemann Upstream!
Fix 'if' to become 'elif', to fix tag assignment bug.
Merge pull request #7 from bmhatfield/tags-fix

Fix 'if' to become 'elif', to fix tag assignment bug.
Add SSLTransport class
Add SSLClient class (ssl connections require more than host/port)
Add example ssl_client, using client-side certificates from Riemann's own example CA
Change port to updated Riemann standard SSL port
Merge pull request #8 from bmhatfield/ssl-support

Add SSLTransport and SSLClient to Bernhard