Specify go 1.1 in Travis, remove unnecessary return.
Delete removed option in multi port config sample.
Use google as test target on travis.
Add -b option to listen to specific address for client.
Update README.

Recommend AES encryption method.
Document the -b option for the client.
Build windows server in build script.
Bump version to 1.1.1
Merge branch 'develop', version 1.1.1