README.md in npy-0.1.0 vs README.md in npy-0.1.1

@@ -1,11 +1,13 @@
 # Npy
 
-Load NumPy `npy` and `npz` files in Ruby - no Python required
+Save and load NumPy `npy` and `npz` files in Ruby - no Python required
 
 :fire: Uses [Numo::NArray](https://github.com/ruby-numo/numo-narray) for blazing performance
 
+[![Build Status](https://travis-ci.org/ankane/npy.svg?branch=master)](https://travis-ci.org/ankane/npy)
+
 ## Installation
 
 Add this line to your application’s Gemfile:
 
 ```ruby
@@ -16,10 +18,17 @@
 
 ### npy
 
 `npy` files contain a single array
 
+Save an array
+
+```ruby
+arr = Numo::Int32[0...10]
+Npy.save("x.npy", arr)
+```
+
 Load an `npy` file
 
 ```ruby
 arr = Npy.load("x.npy")
 ```
@@ -33,10 +42,18 @@
 
 ### npz
 
 `npz` files contain multiple arrays
 
+Save multiple arrays
+
+```ruby
+x =  Numo::Int32[0...10]
+y = x * 2
+Npy.save_npz("mnist.npz", x: x, y: y)
+```
+
 Load an `npz` file
 
 ```ruby
 arrs = Npy.load_npz("mnist.npz")
 ```
@@ -56,9 +73,11 @@
 Arrays are lazy loaded for performance
 
 ## Resources
 
 - [npy format](https://docs.scipy.org/doc/numpy/reference/generated/numpy.lib.format.html#module-numpy.lib.format)
+- [NumPy data types](https://docs.scipy.org/doc/numpy/user/basics.types.html)
+- [Numo::NArray docs](https://ruby-numo.github.io/narray/narray/Numo/NArray.html)
 
 ## History
 
 View the [changelog](https://github.com/ankane/npy/blob/master/CHANGELOG.md)