Change addPendingChange to take a JsonValue

This makes it possible to update nested objects within an Info object.
For example, when updating the shared link JSON object within a file
info JSON object.

Author: gcurtis

src/main/java/com/box/sdk/BoxItem.java

@@ -55,7 +55,7 @@ public String getName() {
 
         public void setName(String name) {
             this.name = name;
-            this.addPendingChange("name", name);
+            this.addPendingChange("name", JsonValue.valueOf(name));
         }
 
         public Date getCreatedAt() {
@@ -72,7 +72,7 @@ public String getDescription() {
 
         public void setDescription(String description) {
             this.description = description;
-            this.addPendingChange("description", description);
+            this.addPendingChange("description", JsonValue.valueOf(description));
         }
 
         public long getSize() {

src/main/java/com/box/sdk/BoxResource.java

@@ -3,6 +3,7 @@
 import java.util.List;
 
 import com.eclipsesource.json.JsonObject;
+import com.eclipsesource.json.JsonValue;
 
 /**
  * The abstract base class for all resource types (files, folders, comments, collaborations, etc.) used by the API.
@@ -140,7 +141,7 @@ public String getPendingChanges() {
          * @param key   the name of the field.
          * @param value the new value of the field.
          */
-        protected void addPendingChange(String key, String value) {
+        protected void addPendingChange(String key, JsonValue value) {
             this.pendingChanges.set(key, value);
         }