Improved install command. (#4106)
Improved install command. (#4106)

Added `-y` flag to `sudo apt-get` command.
google/protobuf,google/protobuf,google/protobuf,google/protobuf,google/protobuf,google/protobuf,google/protobuf,google/protobuf,google/protobuf,google/protobuf,google/protobuf