Add README.md

Signed-off-by: Denys Fedoryshchenko <denys.f@collabora.com>

Author: nuclearcat

README.md

@@ -0,0 +1,37 @@
+# KernelCI Storage Server
+
+This is a simple storage server that supports file upload and download, with token based authentication.
+It supports multiple backends, currently only Azure Blob is supported, to provide user transparent storage.
+It caches the files in a local directory and serves them from there.
+Range requests are supported, but only for start offset, end limit is not implemented yet.
+
+## Configuration
+
+The server is configured using toml configuration file, the default configuration file is `config.toml`.
+
+```toml
+jwt_secret="JWT_SECRET"
+[azure]
+account=""
+key=""
+container=""
+sastoken=""
+```
+
+## API
+
+### Upload
+
+`POST /upload`
+
+Upload a file to the server.
+
+field path: the path to store the file in the server.
+field file0: the file to upload.
+
+### Download
+
+`GET /path/to/file`
+
+Download a file from the server.
+