Added a method to update the session's user object

BeamAPI.podspec

@@ -1,14 +1,14 @@
 Pod::Spec.new do |s|
   s.name       = "BeamAPI"
-  s.version    = "1.4.2"
+  s.version    = "1.4.3"
   s.summary    = "An interface to communicate with Beam's backend."
   s.homepage   = "https://github.com/WatchBeam/beam-client-swift"
   s.license    = "MIT"
   s.author     = { "Jack Cook" => "jack@beam.pro" }
 
   s.requires_arc           = true
   s.ios.deployment_target  = "8.2"
-  s.source                 = { :git => "https://github.com/WatchBeam/beam-client-swift.git", :tag => "1.4.2" }
+  s.source                 = { :git => "https://github.com/WatchBeam/beam-client-swift.git", :tag => "1.4.3" }
   s.source_files           = "Pod/Classes/**/*"
 
   s.dependency "Starscream", "~> 2.0"

Pod/Classes/Clients/BeamSession.swift

@@ -23,13 +23,29 @@ public class BeamSession {
     }
 
     /// The authenticated user's data.
-    public var user: BeamUser!
+    public var user: BeamUser
 
     /// Initializes a session given a user. Won't do anything on its own unless BeamSession.sharedSession is set to it.
     public init(user: BeamUser) {
         self.user = user
     }
 
+    /**
+     Updates the stored user model.
+
+     :param: completion An optional completion block, called when the new user object has been retrieved.
+     */
+    public func updateStoredUser(completion: ((_ user: BeamUser?, _ error: BeamRequestError?) -> Void)?) {
+        BeamClient.sharedClient.users.getUserWithId(self.user.id) { user, error in
+            if let user = user {
+                self.user = user
+                UserDefaults.standard.set(user.encoded, forKey: "UserData")
+            }
+
+            completion?(user, error)
+        }
+    }
+
     /**
      Authenticates a user given a username, password, and optional 2FA code.