update for Linda v1.0.0 protocol

<a href="http://shokai.org/blog/archives/8318">橋本商会 » RocketIO::Linda 1.0.0からのプロトコルが少し変わった</a>
## current

``` ruby
tuple_space.watch [1,2] do |tuple|
  p tuple
end
```
## 1.0.0 protocol

``` ruby
tuple_space.watch [1,2] do |tuple, info|
  p tuple
  puts info.from
end
```
