Add readme to archive plugin

plugins/archive/README.md

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+# archive plugin
+
+This plugin was copied from `extract plugin` and that guy is awesome. Thanks!
+
+Defines a function called `archive` that get list the archive file
+you pass it, and it supports a wide variety of archive filetypes.
+
+This way you don't have to know what specific command list archive a file, you just
+do `archive <filename>` and the function takes care of the rest.
+
+To use it, add `archive` to the plugins array in your zshrc file:
+
+```zsh
+plugins=(... archive)
+```
+
+## Supported file extensions
+
+| Extension         | Description                          |
+|:------------------|:-------------------------------------|
+| `7z`              | 7zip file                            |
+| `rar`             | WinRAR archive                       |
+| `tar`             | Tarball                              |
+| `tar.bz2`         | Tarball with bzip2 compression       |
+| `tar.gz`          | Tarball with gzip compression        |
+| `tar.lzma`        | Tarball with lzma compression        |
+| `tar.xz`          | Tarball with lzma2 compression       |
+| `zip`             | Zip archive                          |
+
+See [list of archive formats](https://en.wikipedia.org/wiki/List_of_archive_formats) for
+more information regarding archive formats.
+
+## Contributors
+- Diki Andriansyah - diki1aap@gmail.com