Merge pull request #1 from futoase/update-README.md

update README.md.

Author: uetchy

README.md

@@ -8,11 +8,11 @@ Double-click `Qiita.alfredworkflow` to install workflow.
 
 ```
 $ bundle install --path vendor/bundle --binstubs=.bundle/bin
-$ rake link
+$ bundle exec rake link
 ```
 
 If you using Alfred with Dropbox Sync folder, you should type `rake install` instead of `rake link`.
 
 ## Thanks
 
-- [Alfred 2 Ruby Template](https://github.com/zhaocai/alfred2-ruby-template)
+- [Alfred 2 Ruby Template](https://github.com/zhaocai/alfred2-ruby-template)