title: Not able to import org.springframework.security classes in Eclipse
body: <p>I have installed Spring and Spring Security Extension (latest version 3.6.4.201503051146) in Eclipse Luna but I am still unable to access the security package. When I write "org.springframework." I cannot see "security". 
  I am trying few examples regarding JAAS security and especially JaasAuthenticationToken. </p>
  
  <p>It is also weird that there aren't many examples on the internet regarding JaasAuthenticationToken. Is it deprecated or does it have a hole security?</p>
  
  <p>I also have Maven installed.</p>
  
  <p>Thanks</p>