Add README.me as GitHub is serving the Go file instead...

README.md

@@ -0,0 +1,26 @@
+# gcs-index
+
+Provide auto-index in front of Google Cloud Storage buckets.
+
+Intended to be used together with a caching proxy.
+
+## Usage
+
+```
+gcs-index path:bucket:prefix [path:bucket:prefix ...]
+```
+
+For each bucket:
+- `path` is the "mount point" in the global tree.
+- `bucket` is the name of the bucket.
+- `prefix` is a prefix to apply to objects when listing (might be empty).
+
+## Flags
+
+  - `-port int`: port to listen on (default 8080)
+  - `-socket string`: socket to listen on
+  - `-socket-umask int`: umask for the socket file (default -1)
+  - `-readme`: enable README.md rendering
+  - `-skip-readme`: skip README.md in directory listings
+  - `-version-sort`: sort directory listings using a semver-aware algorithm
+  - `-v`: enable verbose logging