Spanish ¡ not Handled Correctly

[bargri]

"¡Hola!" gives "¡Hola !" when it should be giving "¡ Hola !". On the other hand ¿ works as expected, giving: "¿ Hola ?"

This might be fixed by adding ¡ on line 51.

https://github.com/nltk/nltk/blob/develop/nltk/tokenize/toktok.py#L51

[jonsafari]

Thanks for mentioning this. Fixed in ea1f937