authentication signature fixed

Pusher.java

@@ -66,7 +66,7 @@ private static String byteArrayToString(byte[] data){
     	}
     	return hash;
 	}
-		
+	
 	/**
 	 * Returns a md5 representation of the given string
 	 * @param data
@@ -97,7 +97,7 @@ private static String hmacsha256Representation(String data) {
             // Create the HMAC/SHA256 key from application secret
             final SecretKeySpec signingKey = new SecretKeySpec( pusherApplicationSecret.getBytes(), "HmacSHA256");
 
-            // Create the message authentication code (MAC) 
+            // Create the message authentication code (MAC)
             final Mac mac = Mac.getInstance("HmacSHA256");
             mac.init(signingKey);
             
@@ -106,7 +106,7 @@ private static String hmacsha256Representation(String data) {
             digest = mac.doFinal(data.getBytes());
             //Convert to string
             BigInteger bigInteger = new BigInteger(1,digest);
-    		return String.format("%0" + (digest.length << 1) + "x", bigInteger);
+    		return String.format("%0" + (digest.length << 1) + "x", bigInteger);            
         } catch (NoSuchAlgorithmException nsae) {
             //We should never come here, because GAE has HMac SHA256
         	throw new RuntimeException("No HMac SHA256 algorithm");