Changes:

- Fixes a bug in the parser.
- Fixes bug on parsing of zero sized blob strings.

examples/sync_basic.cpp

@@ -27,7 +27,7 @@ int main()
 
       std::string buffer;
       for (;;) {
-	 resp::response_string res;
+	 resp::response_simple_string res;
 	 resp::read(socket, buffer, res);
 	 std::cout << res.result << std::endl;
       }