Rename sample config file

This means that we can have a `rageshake.yaml` on the live server which is used
without faffing with parameters.

.gitignore

@@ -1,4 +1,4 @@
 /bin
 /bugs
 /pkg
-/rageshake-local.yaml
+/rageshake.yaml

README.md

@@ -14,8 +14,8 @@ gb build
 
 Optional parameters:
 
- * `-config <path>`: The path to a YAML config file; see [./rageshake.yaml] for
-   more information.
+ * `-config <path>`: The path to a YAML config file; see
+   [rageshake.sample.yaml](rageshake.sample.yaml) for more information.
  * `-listen <address>`: TCP network address to listen for HTTP requests
    on. Example: `:9110`.