command line utility added

[juanpabloaj]

• to send messages directly from command line, like:

 date | slacker -t $slack_token -c slack_channel

[os]

Thanks for this @juanpabloaj, it looks good. However I would like to keep slacker as a library only. I think this could be a nice little separate project.

[juanpabloaj]

ok @os , I understand.

I created a slacker command line utility separately.

https://github.com/juanpabloaj/slacker-cli

[os]

Nice!