Update showcase to Spring 4.0.0
Upgrade examples to Spring 4.0.1.
Fix maven dependencies
Fix maven dependencies
Bump httpclient version to 4.3.1
Merge pull request #27 from ractive/SOCIAL-419

Fix maven dependencies
Use non-static methods from ProviderSignInUtils. SOCIAL-314
Merge branch 'master' of github.com:SpringSource/spring-social-samples
Use non-static methods from ProviderSignInUtils. SOCIAL-314
Merge remote-tracking branch 'upstream/master'
fixed pom.xml