Merge pull request #2 from ccpmark/feature/getting-an-invitee-invitation-email

Added getter for email property of an invitee invitation

Author: brianmuse

src/main/java/com/robinpowered/sdk/model/Invitee.java

@@ -230,5 +230,9 @@ public static class Invitation {
         public Invitation(String email) {
             this.email = email;
         }
+
+        public String getEmail() {
+            return email;
+        }
     }
 }