Update property name from approvals missing to approvals left (#460)

src/main/java/org/gitlab4j/api/models/MergeRequest.java

@@ -55,7 +55,7 @@ public class MergeRequest {
 
     // The approval fields will only be available when listing approvals, approving  or unapproving a merge reuest.
     private Integer approvalsRequired;
-    private Integer approvalsMissing;
+    private Integer approvalsLeft;
 
     @JsonSerialize(using = JacksonJson.UserListSerializer.class)
     @JsonDeserialize(using = JacksonJson.UserListDeserializer.class)
@@ -412,14 +412,14 @@ public class MergeRequest {
     }
 
     /**
-     * Get the number of approvals missing for the merge request.
+     * Get the number of approvals left for the merge request.
      *
      * NOTE: This property will only be used when listing, approiving, or unapproving a merge request.
      *
-     * @return the number of approvals missing for the merge request
+     * @return the number of approvals left for the merge request
      */
-    public Integer getApprovalsMissing() {
-        return approvalsMissing;
+    public Integer getApprovalsLeft() {
+        return approvalsLeft;
     }
 
     /**
@@ -427,10 +427,10 @@ public class MergeRequest {
      *
      * NOTE: This property will only be used when listing, approiving, or unapproving a merge request.
      *
-     * @param approvalsMissing the number of approvals missing for the merge request
+     * @param approvalsLeft the number of approvals missing for the merge request
      */
-    public void setApprovalsMissing(Integer approvalsMissing) {
-        this.approvalsMissing = approvalsMissing;
+    public void setApprovalsLeft(Integer approvalsLeft) {
+        this.approvalsLeft = approvalsLeft;
     }
 
     /**

src/test/resources/org/gitlab4j/api/approvals.json

@@ -9,7 +9,7 @@
   "updated_at": "2016-06-08T21:20:42.470Z",
   "merge_status": "can_be_merged",
   "approvals_required": 2,
-  "approvals_missing": 1,
+  "approvals_left": 1,
   "approved_by": [
     {
       "user": {