Add metadata!

README.md

@@ -10,13 +10,15 @@ Read access is public.
 Write access is controlled by tokens.
 
 - Objects are access via a label and tag, or via their hash. For example:
-   - `wget http://dtr.jde.nz/object/squashkiwi:latest`
-   - `wget http://dtr.jde.nz/object/4528400792837739857`
+   - `wget http://localhost:8123/object/squashkiwi:latest`
+   - `wget http://localhost:8123/object/4528400792837739857`
 - The hash is calculated using `uint64_t hash_file(const std::string &path);` in hash.hpp.
 - You can retrieve the hash for a given labvel and tag with, e.g.:
-   - `curl http://dtr.jde.nz/hash/squashkiwi:latest`
+   - `curl http://localhost:8123/hash/squashkiwi:latest`
 - you can get a full list of {label:tag,hash} entries (one tag per entry) with:
-   - `curl http://dtr.jde.nz/dir`
+   - `curl http://localhost:8123/dir`
+- get all metadata for a tag:
+   - `curl http://localhost:8123/meta/squashkiwi:latest`
 - a simple welcome page is served at `/index.html` for those browsing to the site.
 - to upload a file (via http put)
    - `curl -T object_file http://dtr.jde.nz/WRITE_TOKEN/LABEL:TAG`