chore(main.go): update CLI name, usage, and version #41

	# name: Continuous integration
	# on:
	# push:
	# branches:
	# - develop
	# jobs:
	# build:
	# runs-on: ubuntu-latest
	# steps:
	# - name: set up golang
	# uses: actions/setup-go@v2
	# with:
	# go-version: 1.13.15
	# - name: check out code
	# uses: actions/checkout@v2
	# - name: set up docker buildx
	# uses: docker/setup-buildx-action@v1
	# - name: cache docker layers
	# uses: actions/cache@v2
	# with:
	# path: /tmp/.buildx-cache
	# key: ${{ runner.os }}-buildx-${{ github.sha }}
	# restore-keys: \|
	# ${{ runner.os }}-buildx-
	# - name: log into dockerhub
	# uses: docker/login-action@v1
	# with:
	# username: ${{ secrets.DOCKER_USER }}
	# password: ${{ secrets.DOCKER_PASSWORD }}
	# - name: get short sha
	# id: type
	# run: \|
	# sha=$(git rev-parse --short HEAD)
	# echo ::set-output name=id::${sha}
	# - name: docker build and push
	# uses: docker/build-push-action@v2
	# with:
	# push: true
	# file: build/package/Dockerfile
	# tags: dictybase/draftjs-to-slatejs:develop-${{ steps.type.outputs.id }}
	# cache-from: type=local,src=/tmp/.buildx-cache
	# cache-to: type=local,dest=/tmp/.buildx-cache

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