Better references titles

README.md

@@ -79,10 +79,10 @@ http.ListenAndServe(":8080", nil)
 ## References
 
 - [Proposal: Localization support in Go](https://github.com/golang/proposal/blob/master/design/12750-localization.md)
-- [Accept-Language used for locale setting](https://www.w3.org/International/questions/qa-accept-lang-locales)
-- [Multi-regional and multilingual sites](https://support.google.com/webmasters/answer/182192)
-- [Use hreflang for language and regional URLs](https://support.google.com/webmasters/answer/189077)
-- [New markup for multilingual content](https://webmasters.googleblog.com/2011/12/new-markup-for-multilingual-content.html)
-- [Crawling and indexing of locale-adaptive pages](https://webmasters.googleblog.com/2015/01/crawling-and-indexing-of-locale.html)
+- [Accept-Language used for locale setting — W3C](https://www.w3.org/International/questions/qa-accept-lang-locales)
+- [Multi-regional and multilingual sites — Google](https://support.google.com/webmasters/answer/182192)
+- [Use hreflang for language and regional URLs — Google](https://support.google.com/webmasters/answer/189077)
+- [New markup for multilingual content — Google](https://webmasters.googleblog.com/2011/12/new-markup-for-multilingual-content.html)
+- [Crawling and indexing of locale-adaptive pages — Google](https://webmasters.googleblog.com/2015/01/crawling-and-indexing-of-locale.html)
 - [SEO for multilingual sites: language-specific results without changing URL?](https://stackoverflow.com/a/16624252/1882003)
-- [Geotargeting Based On IP Address Is Broken](http://www.stateofdigital.com/geotargeting-based-on-ip-address-is-broken/)
+- [Geotargeting based on IP address is broken](http://www.stateofdigital.com/geotargeting-based-on-ip-address-is-broken/)