Add eh gallery spider

app/src/main/java/com/hippo/ehviewer/client/EhRequestBuilder.java

@@ -19,13 +19,15 @@ package com.hippo.ehviewer.client;
 import com.hippo.ehviewer.Settings;
 import com.hippo.okhttp.ChromeRequestBuilder;
 
+import java.net.MalformedURLException;
+
 public class EhRequestBuilder extends ChromeRequestBuilder {
 
-    public EhRequestBuilder(String url) {
+    public EhRequestBuilder(String url) throws MalformedURLException {
         this(url, Settings.getEhConfig());
     }
 
-    public EhRequestBuilder(String url, EhConfig ehConfig) {
+    public EhRequestBuilder(String url, EhConfig ehConfig) throws MalformedURLException {
         super(url);
         tag(ehConfig);
     }