feat: Added readme

README.md

@@ -0,0 +1,14 @@
+# ndarray-math
+
+Additional math operations for ndarray
+
+1. Cosine Similarity
+```rust
+use ndarray::*;
+use ndarray_math::*;
+fn test_orthogonal_vectors() {
+    let a = array![1.0, 0.0, 0.0];
+    let b = array![0.0, 1.0, 0.0];
+    assert_eq!(a.cosine_similarity(b).unwrap(), 0.0);
+}
+```