Update Go version to 1.9

Fix UnregisterUser http method

Add comments to exported methods and types

Register Huexe at Hue Bridge using setup exe

Fix reports from go_vet and golint

Create executable setup

- able to write a config.yml searching for the Bridge IP Address;

- steps config got renamed from stepSize / step_size;

- removed dependency of github.com/spf13/viper.

Part of issue #1
Missing a setup to get the username and lamp id

Change build to generate zip and tar.gz

Create a lib/config for all executables

Add builds for linux-amd64 osx-amd64 win-386

Setup travis-ci build

update README.md