fix for prevalence being a double instead of int

Author: germanattanasio

src/main/java/com/ibm/watson/developer_cloud/concept_expansion/v1/ConceptExpansion.java

@@ -176,7 +176,7 @@ private String decodeResult(String result) {
 	 */
 	private Concept formatConcept(JsonObject conceptJson){
 		return new Concept(conceptJson.get("result").getAsString(),
-				conceptJson.get("prevalence").getAsInt());
+				conceptJson.get("prevalence").getAsDouble());
 	}
 
 	/**

src/main/java/com/ibm/watson/developer_cloud/concept_expansion/v1/model/Concept.java

@@ -30,7 +30,7 @@ public class Concept {
 	private String name;
 
 	/** The prevalence. */
-	private int prevalence;
+	private Double prevalence;
 
 	/**
 	 * Instantiates a new concept.
@@ -40,7 +40,7 @@ public class Concept {
 	 * @param prevalence
 	 *            the prevalence
 	 */
-	public Concept(String name, int prevalence) {
+	public Concept(String name, Double prevalence) {
 		super();
 		this.name = name;
 		this.prevalence = prevalence;
@@ -62,7 +62,7 @@ public String getName() {
 	 * 
 	 * @return the prevalence
 	 */
-	public int getPrevalence() {
+	public Double getPrevalence() {
 		return prevalence;
 	}