Build Handler on new thread

Backgrounds all websocket communication

Fixes #142

Simperium/src/main/java/com/simperium/android/AsyncWebSocketProvider.java

@@ -9,6 +9,7 @@
 
 import android.net.Uri;
 import android.os.Handler;
+import android.os.Looper;
 
 import java.io.IOException;
 
@@ -19,12 +20,41 @@ class AsyncWebSocketProvider implements WebSocketManager.ConnectionProvider {
     protected final String mAppId;
     protected final String mSessionId;
     protected final AsyncHttpClient mAsyncClient;
-    protected final Handler mHandler = new Handler();
+    protected Handler mHandler;
 
     AsyncWebSocketProvider(String appId, String sessionId, AsyncHttpClient asyncClient) {
         mAppId = appId;
         mAsyncClient = asyncClient;
         mSessionId = sessionId;
+
+        Runnable handlerInit = new Runnable() {
+
+            @Override
+            public void run() {
+                synchronized(this) {
+                    Looper.prepare();
+
+                    mHandler = new Handler();
+
+                    notify();
+
+                }
+                Looper.loop();
+            }
+
+        };
+
+        Thread handlerThread = new Thread(handlerInit, "websocket-handler");
+
+        try {
+            synchronized(handlerInit) {
+                handlerThread.start();
+                handlerInit.wait();
+            }
+        } catch (InterruptedException e) {
+            // interrupted while initializing handler
+        }
+
     }
 
     @Override