Added missing @Parameter annotation.

src/main/java/com/syncleus/maven/plugins/mongodb/StartMongoMojo.java

@@ -267,10 +267,11 @@ public class StartMongoMojo extends AbstractMongoMojo {
     @Parameter(property = "mongodb.parallel", defaultValue = "false")
     private boolean parallelImport;
 
-    private Integer setPort = null;
-
+    @Parameter
     private InitializerConfig[] initalizations;
 
+    private Integer setPort = null;
+
     public StartMongoMojo() {
     }