for writeas-cli and wf-cli.

previously was calling the new `wf` binary the community edition, now
just called `writefreely`

this changes the posts listing output back to v1.2 style

also removes remote posts listing for now.
posts with edit tokens are behind `-v` flag.

- remove line about authentication not being supported
- add claim to list of commands in both README and GUIDE
- add auth, blogs and claim example usage in GUIDE

This returns URLs with Markdown enabled. Part of #14

Adds new `writeas publish <file>` command

When composing posts with `writeas new`, this is checked before `EDITOR`
and then falling back to default editors.

Plus add download + license badges

Includes posting ability using the current API utilized by the Android app at i.write.as.