URL Cleanup (#52)

This commit updates URLs to prefer the https protocol. Redirects are not followed to avoid accidentally expanding intentionally shortened URLs (i.e. if using a URL shortener).

# Fixed URLs

## Fixed But Review Recommended
These URLs were fixed, but the https status was not OK. However, the https status was the same as the http request or http redirected to an https URL, so they were migrated. Your review is recommended.

* [ ] http://compose.docker.io/ (UnknownHostException) with 1 occurrences migrated to:
  https://compose.docker.io/ ([https](https://compose.docker.io/) result UnknownHostException).
* [ ] http://example.com/oauth/token (404) with 1 occurrences migrated to:
  https://example.com/oauth/token ([https](https://example.com/oauth/token) result 404).

## Fixed Success
These URLs were switched to an https URL with a 2xx status. While the status was successful, your review is still recommended.

* [ ] http://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/ with 1 occurrences migrated to:
  https://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/ ([https](https://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/) result 200).
* [ ] http://example.com with 9 occurrences migrated to:
  https://example.com ([https](https://example.com) result 200).
* [ ] http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html with 1 occurrences migrated to:
  https://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html ([https](https://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html) result 200).
* [ ] http://cloudfoundry.org with 1 occurrences migrated to:
  https://cloudfoundry.org ([https](https://cloudfoundry.org) result 301).
* [ ] http://plugins.jetbrains.com/plugin/6546 with 1 occurrences migrated to:
  https://plugins.jetbrains.com/plugin/6546 ([https](https://plugins.jetbrains.com/plugin/6546) result 301).
* [ ] http://eclipse.org with 1 occurrences migrated to:
  https://eclipse.org ([https](https://eclipse.org) result 302).
* [ ] http://eclipse.org/m2e/ with 2 occurrences migrated to:
  https://eclipse.org/m2e/ ([https](https://eclipse.org/m2e/) result 302).
* [ ] http://www.springsource.com/developer/sts with 1 occurrences migrated to:
  https://www.springsource.com/developer/sts ([https](https://www.springsource.com/developer/sts) result 302).

spring-cloud-cloudfoundry-sample/src/main/java/org/springframework/cloud/cloudfoundry/sample/CloudFoundryApplication.java

@@ -30,7 +30,7 @@ import org.springframework.context.annotation.Bean;
 
 /**
  * This example assumes you've registered an application on
- * <A href="http://cloudfoundry.org">Cloud Foundry</A> named {@code hi-service} that
+ * <A href="https://cloudfoundry.org">Cloud Foundry</A> named {@code hi-service} that
  * responds with a String at {@code /hi/ name} . There is a sample file in the project
  * root called {@code hi-service.groovy} which you can deploy using the {@code spring} CLI
  * and the {@code cf} CLI that works appropriately for this demonstration.