[K-means] Upgrade dependencies in Cargo.toml, add README.md (rust-ndarray#3)

* Add README to k-means example
* Update dependencies in Cargo.toml for k-means example

Author: LukeMathWalker

k_means/Cargo.toml

@@ -6,7 +6,7 @@ edition = "2018"
 workspace = ".."
 
 [dependencies]
-ndarray = {version = "0.12"}
-ndarray-stats = {git = "https://github.com/LukeMathWalker/ndarray-stats", branch = "master"}
-ndarray-rand = "0.10"
+ndarray = {version = "0.13"}
+ndarray-stats = "0.3"
+ndarray-rand = "0.11"
 rand = "0.7"

k_means/README.md

@@ -0,0 +1,9 @@
+K-Means
+=======
+
+An implementation of K-Means clustering using the [standard algorithm](https://en.wikipedia.org/wiki/K-means_clustering).
+
+You can run the example using
+```sh
+cargo run
+```