Handle records with no avatars (#181)

Author: thewheat

intercom-java/src/main/java/io/intercom/api/Avatar.java

@@ -30,7 +30,9 @@ public URI getImageURL() {
     }
 
     public Avatar setImageURL(String imageURL) {
-        this.imageURL = URI.create(imageURL);
+        if(imageURL != null) {
+            this.imageURL = URI.create(imageURL);
+        }
         return this;
     }
 

intercom-java/src/test/java/io/intercom/api/UserTest.java

@@ -246,6 +246,13 @@ public void TestSerdes() throws Exception {
         assertEquals(null, customAttribute);
     }
 
+    @Test
+    public void TestSerdesNoAvatar() throws Exception {
+        String json = load("user_no_avatar.json");
+        final User user = mapper.readValue(json, User.class);
+        assertEquals(null, user.getAvatar().getImageURL());
+    }
+
     @Test
     public void testBulkValidation() {
 

intercom-java/src/test/resources/user_no_avatar.json

@@ -0,0 +1,77 @@
+{
+  "type": "user",
+  "id": "530370b477ad7120001d",
+  "user_id": "25",
+  "email": "wash@serenity.io",
+  "phone": "+1234567890",
+  "name": "Hoban Washburne",
+  "remote_created_at": 1392731331,
+  "signed_up_at": 1392731331,
+  "updated_at": 1392734388,
+  "session_count": 0,
+  "last_seen_ip": "1.2.3.4",
+  "unsubscribed_from_emails": false,
+  "last_request_at": 1397574667,
+  "created_at": 1392734388,
+  "user_agent_data": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9",
+  "custom_attributes": {
+    "truthy_typed": true,
+    "floatly_typed": 155.5,
+    "stringly_typed": "data",
+    "dately_typed_at": 1397574667,
+    "longly_typed": 221397574667,
+    "intly_typed": 1,
+    "nully_typed": null
+  },
+  "avatar": {
+    "type": "avatar",
+    "image_url": null
+  },
+  "location_data": {
+    "type": "location_data",
+    "city_name": "Dublin",
+    "continent_code": "EU",
+    "country_code": "IRL",
+    "country_name": "Ireland",
+    "latitude": 53.159233,
+    "longitude": -6.723,
+    "postal_code": null,
+    "region_name": "Dublin",
+    "timezone": "Europe/Dublin"
+  },
+  "social_profiles": {
+    "type": "social_profile.list",
+    "social_profiles": [
+      {
+        "name": "Twitter",
+        "id": "1235d3213",
+        "username": "th1sland",
+        "url": "http://twitter.com/th1sland"
+      }
+    ]
+  },
+  "companies": {
+    "type": "company.list",
+    "companies": [
+      {
+        "id": "530370b477ad7120001e"
+      }
+    ]
+  },
+  "segments": {
+    "type": "segment.list",
+    "segments": [
+      {
+        "id": "5310d8e7598c9a0b24000002"
+      }
+    ]
+  },
+  "tags": {
+    "type": "tag.list",
+    "tags": [
+      {
+        "id": "202"
+      }
+    ]
+  }
+}