README.md in standard-deviation-0.1.0 vs README.md in standard-deviation-0.1.1

@@ -5,19 +5,19 @@
 ## Installation
 
 Add this line to your application's Gemfile:
 
 ```ruby
-gem 'standard_deviation'
+gem 'standard-deviation'
 ```
 
 And then execute:
 
     $ bundle
 
 Or install it yourself as:
 
-    $ gem install standard_deviation
+    $ gem install standard-deviation
 
 ## Usage
 
 `[5,10,15,20,25].standard_deviation # => 7.905694150420948`