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+++ b/README.md
@@ -1,3 +1,90 @@
 terse
 =====
-Short URL server written in [go](https://golang.org)
+Short URL server written in [go](https://golang.org) which stores all URL short code mappings in an in-memory least recently used (LRU) cache.
+
+## Getting Started
+```bash
+# Install the `terse` command
+go get github.com/brettlangdon/terse/cmd/...
+
+# Start the server
+terse
+```
+
+```
+$ curl -i -X POST -d "https://github.com/brettlangdon/terse" http://127.0.0.1:5893
+HTTP/1.1 201 Created
+Date: Mon, 16 Nov 2015 01:10:12 GMT
+Content-Length: 28
+Content-Type: text/plain; charset=utf-8
+
+http://127.0.0.1:5892/DEtr1b
+$ curl -i http://127.0.0.1:5892/DEtr1b
+HTTP/1.1 301 Moved Permanently
+Location: https://github.com/brettlangdon/terse
+Date: Mon, 16 Nov 2015 01:10:54 GMT
+Content-Length: 72
+Content-Type: text/html; charset=utf-8
+
+<a href="https://github.com/brettlangdon/terse">Moved Permanently</a>.
+
+```
+
+## Installing
+Install via `go get` with `go get github.com/brettlangdon/terse/cmd/...`.
+
+`terse` requires `GO15VENDOREXPERIMENT=1` in order to build.
+
+## Usage
+```
+$ ./terse --help
+usage: terse [--max MAX] [--bind BIND] [--server SERVER]
+
+options:
+  --max MAX, -m MAX      max number of links to keep ("0" means no limit) [default: 1000]
+  --bind BIND, -b BIND   "[host]:<port>" to bind the server to [default: 127.0.0.1:5892]
+  --server SERVER, -s SERVER
+                         base server url to generate links as (e.g. "https://short.domain.com") [default: "http://<bind>"]
+```
+
+### Max
+`terse` uses an in-memory least recently used (LRU) cache and defaults to having a limit of only 1000 links. This means that after generating 1000 URLs the least recently used URLs will start to be purged from the cache.
+
+You can control this limit with the `--max` parameter. Setting the value to `0` will disable the size limit of the cache.
+
+### Bind
+If you would like to change the host or port that `terse` listens on by default then supply the `--bind` parameter. Examples: `127.0.0.1:5892`, `:80`, `0.0.0.0:8000`, etc.
+
+By default `terse` will listen to `127.0.0.1:5892`.
+
+### Server
+By default `terse` will respond with URLs generated based on the `--bind` parameter. This means that by default you will get responses like `http://127.0.0.1:5892/<SHORT CODE>`. Instead, if you would like to generate URLs with a different scheme and hostname, supply the correct `--server` parameter.
+
+For example:
+
+```bash
+terse --server "https://s.example.org"
+```
+
+Will produce URLs like `https://s.example.org/<SHORT CODE>`.
+
+## API
+`terse` has a very simple to use API.
+
+### Creating Links
+To create a new short link, issue a `POST` request to the server with the `POST` body of the URL to shorten.
+
+For example:
+
+```bash
+curl -X POST -d "https://github.com/brettlangdon/terse" http://127.0.0.1:5892
+```
+
+A valid response will have the status `201 Created`, and the response body will be the short URL.
+
+You may also receive a `400 Bad Request` if the `POST` body is not a valid URL. Or a `409 Conflict` if there was a hash conflict (two different URLs ended up with the same short code).
+
+### Accessing Links
+To utilize a short link, issues a `GET` request for the URL. If the short code exists in the system then the response will be a `301 Moved Permanently` for the stored URL.
+
+If the short code does not exist, then you will receive a `404 Not Found` response.