README.md in annoy-rb-0.6.0 vs README.md in annoy-rb-0.6.1

@@ -1,13 +1,13 @@
-# Annoy.rb
+# annoy-rb
 
 [![Build Status](https://github.com/yoshoku/annoy.rb/workflows/build/badge.svg)](https://github.com/yoshoku/annoy.rb/actions?query=workflow%3Abuild)
 [![Gem Version](https://badge.fury.io/rb/annoy-rb.svg)](https://badge.fury.io/rb/annoy-rb)
 [![License](https://img.shields.io/badge/License-Apache%202.0-yellowgreen.svg)](https://github.com/yoshoku/annoy.rb/blob/main/LICENSE.txt)
-[![Documentation](http://img.shields.io/badge/api-reference-blue.svg)](https://yoshoku.github.io/annoy.rb/doc/)
+[![Documentation](https://img.shields.io/badge/api-reference-blue.svg)](https://yoshoku.github.io/annoy.rb/doc/)
 
-Annoy.rb provides Ruby bindings for the [Annoy (Approximate Nearest Neighbors Oh Yeah)](https://github.com/spotify/annoy).
+annoy-rb provides Ruby bindings for the [Annoy (Approximate Nearest Neighbors Oh Yeah)](https://github.com/spotify/annoy).
 
 ## Installation
 
 Add this line to your application's Gemfile:
 
@@ -21,15 +21,28 @@
 
 Or install it yourself as:
 
     $ gem install annoy-rb
 
-Note: Annoy.rb does not require the installation of another external library.
+Note: annoy-rb does not require the installation of another external library.
+In addition, annoy-rb does not give any optimization options when building native extensions.
+If necessary, add optimization options yourself during installation, as follows;
 
+```
+$ bundle config --local build.annoy-rb "--with-cxxflags=-march=native"
+$ bundle install
+```
+
+Or:
+
+```
+$ gem install annoy-rb -- --with-cxxflags=-march=native
+```
+
 ## Documentation
 
-* [Annoy.rb API Documentation](https://yoshoku.github.io/annoy.rb/doc/)
+* [annoy-rb API Documentation](https://yoshoku.github.io/annoy.rb/doc/)
 
 ## Usage
 
 ```ruby
 require 'annoy'
@@ -48,11 +61,11 @@
 u = Annoy::AnnoyIndex.new(n_features: f, metric: 'angular')
 u.load('test.ann')
 p u.get_nns_by_item(0, 100) # will find the 100 nearest neighbors.
 ```
 
-With the default argument, annoy.rb uses double precision floating point type for the data type of vector element.
+With the default argument, annoy-rb uses double precision floating point type for the data type of vector element.
 On the other hand, the [Python bindings of Annoy](https://pypi.org/project/annoy/) use single precision floating point type.
 If you want to load a search index created with the Python bindings, specify 'float32' to the dtype argument.
 
 ```ruby
 require 'annoy'
@@ -68,6 +81,6 @@
 
 ## Contributing
 
 Bug reports and pull requests are welcome on GitHub at https://github.com/yoshoku/annoy.rb.
 This project is intended to be a safe, welcoming space for collaboration,
-and contributors are expected to adhere to the [Contributor Covenant](http://contributor-covenant.org) code of conduct.
+and contributors are expected to adhere to the [Contributor Covenant](https://contributor-covenant.org) code of conduct.