Updated examples for Swift (#763)

* Updated Swift usage

Updated Swift usage based on
parse-community/Parse-SDK-iOS-OSX#1311

* Update cloud-code.md

* Added Example on how to abort Hooks and functions

Added Example on how to abort Hooks and functions

Source: https://github.com/parse-community/parse-server/blob/master/3.0.0.md

* Revert "Added Example on how to abort Hooks and functions"

This reverts commit 3350d09.

* Added Example on how to abort Hooks and functions

Added Example on how to abort Hooks and functions

Source: https://github.com/parse-community/parse-server/blob/master/3.0.0.md

* Revert "Added Example on how to abort Hooks and functions"

This reverts commit 3350d09.

* Update Swift login snippet to work with current version of Swift

Update to change

1.  NSError to Error when logging in
2. use updated function name

* Updated currentUser() to current()

Updated currentUser() to current() when checking for currentuser

* Update login / logout

Update to swift and ObjC login section to change

currentUser() to current()

* Revert "Update login / logout"

This reverts commit 3299b67.

* updated for latest version of Parse.

updated for latest version of Parse.

* few swift updates i found that were outdated

Co-authored-by: Jayson Ng <[email protected]>

Author: jaysonng

_includes/common/security.md

@@ -79,7 +79,7 @@ PFUser *user = [PFUser currentUser];
 user.ACL = [PFACL ACLWithUser:user];
 ```
 ```swift
-if let user = PFUser.currentUser() {
+if let user = PFUser.current() {
     user.ACL = PFACL(user: user)
 }
 ```
@@ -136,7 +136,7 @@ To make it super easy to create user-private ACLs for every object, we have a wa
 [PFACL setDefaultACL:[PFACL ACL] withAccessForCurrentUser:YES];
 ```
 ```swift
-PFACL.setDefaultACL(PFACL(), withAccessForCurrentUser: true)
+PFACL.setDefault(PFACL(), withAccessForCurrentUser: true)
 ```
 </div>
 {% endif %}
@@ -189,7 +189,7 @@ privateData.ACL = [PFACL ACLWithUser:[PFUser currentUser]];
 [[PFUser currentUser] setObject:privateData forKey:@"privateData"];
 ```
 ```swift
-if let currentUser = PFUser.currentUser() {
+if let currentUser = PFUser.current() {
     let privateData = PFObject(className: "PrivateUserData")
     privateData.ACL = PFACL(user: currentUser)
     privateData.setObject("555-5309", forKey: "phoneNumber")
@@ -262,9 +262,9 @@ PFACL *acl = [PFACL ACL];
 ```
 ```swift
 let acl = PFACL()
-acl.setPublicReadAccess(true)
+acl.hasPublicReadAccess = true
 if let currentUser = PFUser.currentUser() {
-    acl.setWriteAccess(true, forUser: currentUser)
+    acl.setWriteAccess(true, for: currentUser)
 }
 ```
 </div>
@@ -314,7 +314,7 @@ $acl->setWriteAccess(ParseUser::getCurrentUser(), true);
 ```
 {% endif %}
 
-Sometimes it's inconvenient to manage permissions on a per-user basis, and you want to have groups of users who get treated the same (like a set of admins with special powers). Roles are are a special kind of object that let you create a group of users that can all be assigned to the ACL. The best thing about roles is that you can add and remove users from a role without having to update every single object that is restricted to that role. To create an object that is writeable only by admins:
+Sometimes it's inconvenient to manage permissions on a per-user basis, and you want to have groups of users who get treated the same (like a set of admins with special powers). Roles are a special kind of object that let you create a group of users that can all be assigned to the ACL. The best thing about roles is that you can add and remove users from a role without having to update every single object that is restricted to that role. To create an object that is writeable only by admins:
 
 {% if page.language == "objective_c-swift" %}
 <div class="language-toggle" markdown="1">

_includes/ios/users.md

@@ -48,10 +48,10 @@ func myMethod() {
   // other fields can be set just like with PFObject
   user["phone"] = "415-392-0202"
 
-  user.signUpInBackgroundWithBlock {
-    (succeeded: Bool, error: NSError?) -> Void in
+  user.signUpInBackground {
+    (succeeded: Bool, error: Error?) -> Void in
     if let error = error {
-      let errorString = error.userInfo["error"] as? NSString
+      let errorString = error.localizedDescription
       // Show the errorString somewhere and let the user try again.
     } else {
       // Hooray! Let them use the app now.
@@ -416,7 +416,7 @@ To kick off the password reset flow, ask the user for their email address, and c
 [PFUser requestPasswordResetForEmailInBackground:@"[email protected]"];
 ```
 ```swift
-PFUser.requestPasswordResetForEmailInBackground("[email protected]")
+PFUser.requestPasswordResetForEmail(inBackground:"[email protected]")
 ```
 </div>