add README

LICENSE

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+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or
+distribute this software, either in source code form or as a compiled
+binary, for any purpose, commercial or non-commercial, and by any
+means.
+
+In jurisdictions that recognize copyright laws, the author or authors
+of this software dedicate any and all copyright interest in the
+software to the public domain. We make this dedication for the benefit
+of the public at large and to the detriment of our heirs and
+successors. We intend this dedication to be an overt act of
+relinquishment in perpetuity of all present and future rights to this
+software under copyright law.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+For more information, please refer to <https://unlicense.org>
+

README.md

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+# some LINE sticker pack downloader
+
+Small script to download a LINE sticker pack and spit it out into the filesystem. What you do after that is up to you. I've been using it for Signal sticker packs.
+
+## Usage
+
+```sh
+$ ./fetch.sh <LINE pack ID>
+# or
+$ ./fetch.sh https://store.line.me/stickershop/...
+```
+
+## Requirements
+
+Nix OR Python 3 and the following packages:
+
+- beautiful soup 4
+- requests
+
+If you have Nix installed it will run the script in a nix-shell with the above requirements, so you don't need to have them in your environment.
+
+## License
+
+[Unlicense](./LICENSE).