add readme and license

LICENSE

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+swill: Mastodon CLI.
+Copyright (C) 2022 Alexander Weinhold
+
+Unless explicitly stated otherwise, the following applies:
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License version 2 as published by
+the Free Software Foundation.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.

Readme.md

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+swill
+========
+
+swill is a Mastodon command line interface.
+
+You can find releases on [releases.gutmet.org](https://releases.gutmet.org) or
+build it yourself.
+
+build
+-----
+
+Check out the repository and compile with
+
+```
+go build -o swill
+```
+
+
+usage
+-----
+
+To update your status with text of any length and any number of JPGs, PNGs, GIFs, MP4s:
+
+```
+swill status STATUS [FILE1 FILE2 ...]
+```
+
+To get the timeline of a specific user:
+
+```
+swill timeline USERNAME
+```
+
+
+On first use, swill swill ask you to register a new app and create an access token. Those values will be stored in HOME/.swill/ for later use.
+
+swill will automatically split large status messages and multiple files into separate statuses belonging to the same thread.
+
+Each command can use a go text template to format the printed results - pass a file name to '--template'. The template is executed with a slice of []*mastodon.Status. See go-mastodon for available data fields.
+
+final note
+----------
+
+swill does not sanitize/validate user input for now.
+
+
+final final note
+----------------
+
+If you want to buy me a beer, just send inconspicuous envelopes.