Add some fetures.

[kenti-lan]

1.when hover an item , it just hover dont do select action;
2.add key code 32.When typing chinese ,it will use key space to choose a word;
3.when init ,it will load data .because i want container to show just click on the input element;
4.Add a mousedown event on the input element to show container immediately.

[pawelczak]

@kenti-lan this looks very promising, I will look into this.