- Refactoring classes

- Add Installation Class
- Add AccessToken Class (not yet complete)
- Remove PNObjectProperty
- Move PNObjectProperty methods to "PNObject+Protected.h"

Pod/Classes/PNClasses/PNAddress.m

@@ -0,0 +1,33 @@
+//
+//  PNAddress.m
+//  Pods
+//
+//  Created by Giuseppe Nucifora on 13/01/16.
+//
+//
+
+#import "PNAddress.h"
+
+@implementation PNAddress
+
++ (NSString *) objectClassName {
+    return @"Address";
+}
+
++ (NSDictionary *) objcetMapping {
+    NSDictionary *mapping = @{@"country":@"country",
+                              @"province":@"province",
+                              @"city":@"city",
+                              @"street":@"street",
+                              @"number":@"number",
+                              @"zip":@"zip",
+                              @"location":@{@"key":@"location",@"type":@"PNLocation"},
+                              };
+    return mapping;
+}
+
++ (BOOL)singleInstance {
+    return NO;
+}
+
+@end