modified getAsyncClient to return CloseableHttpAsyncClient instance - f…

…ixes #111

jest/src/main/java/io/searchbox/client/http/JestHttpClient.java

@@ -1,41 +1,34 @@
 package io.searchbox.client.http;
 
 
+import com.google.gson.Gson;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonParser;
+import com.google.gson.JsonSyntaxException;
 import io.searchbox.Action;
 import io.searchbox.client.AbstractJestClient;
 import io.searchbox.client.JestClient;
 import io.searchbox.client.JestResult;
 import io.searchbox.client.JestResultHandler;
 import io.searchbox.client.http.apache.HttpDeleteWithEntity;
 import io.searchbox.client.http.apache.HttpGetWithEntity;
-
-import java.io.IOException;
-import java.io.UnsupportedEncodingException;
-import java.nio.charset.Charset;
-import java.util.Map.Entry;
-import java.util.concurrent.ExecutionException;
-
 import org.apache.http.HttpResponse;
 import org.apache.http.HttpStatus;
 import org.apache.http.StatusLine;
-import org.apache.http.client.methods.HttpEntityEnclosingRequestBase;
-import org.apache.http.client.methods.HttpHead;
-import org.apache.http.client.methods.HttpPost;
-import org.apache.http.client.methods.HttpPut;
-import org.apache.http.client.methods.HttpUriRequest;
+import org.apache.http.client.methods.*;
 import org.apache.http.concurrent.FutureCallback;
 import org.apache.http.entity.StringEntity;
 import org.apache.http.impl.client.CloseableHttpClient;
 import org.apache.http.impl.nio.client.CloseableHttpAsyncClient;
-import org.apache.http.nio.client.HttpAsyncClient;
 import org.apache.http.util.EntityUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import com.google.gson.Gson;
-import com.google.gson.JsonElement;
-import com.google.gson.JsonParser;
-import com.google.gson.JsonSyntaxException;
+import java.io.IOException;
+import java.io.UnsupportedEncodingException;
+import java.nio.charset.Charset;
+import java.util.Map.Entry;
+import java.util.concurrent.ExecutionException;
 
 
 /**
@@ -197,7 +190,7 @@ public void setHttpClient(CloseableHttpClient httpClient) {
         this.httpClient = httpClient;
     }
 
-    public HttpAsyncClient getAsyncClient() {
+    public CloseableHttpAsyncClient getAsyncClient() {
         return asyncClient;
     }