Duplicate words

README.md

@@ -1,6 +1,6 @@
 # Bower specifications
 
-Bower execution can be can be configured in two ways:
+Bower execution can be configured in two ways:
 
 - With [bower.json](./json.md) for project configuration (like `package.json` or `Gemfile`)
 - With [configuration variables](./config.md) for execution in general (like command-line flags)