title: Server-side Single sign-on with Live Connect API
body: <p>Assuming I get user's email and password in a variable, how do I authenticate on Live Connect on behalf of this user who consent to grant me with permissions to access his information ? 
  Is it possible to perform this by only using REST implementation ?</p>
  
  <p>Using PHP.</p>
  
  <p>[EDIT]
  I need to use my own login page (user/password) and cannot use the Outlook Live Connect SignIn window.</p>