chore(ci): fix goreleaser action

feat: go 1.15

Signed-off-by: Carlos Alexandro Becker <caarlos0@gmail.com>

docs: improve readme

Signed-off-by: Carlos Alexandro Becker <caarlos0@gmail.com>

feat: change default command to next

BREAKING CHANGE: before the default was current

Signed-off-by: Carlos Alexandro Becker <caarlos0@gmail.com>

fix: goreleaser config

Signed-off-by: Carlos Alexandro Becker <caarlos0@gmail.com>

fix: goreleaser.yml

feat: added current cmd

fix: phonies and default goal

fix: fixed makefile

chore: goreleaser