add rowStyle and expandedRowStyle Properties

[chats-is]

I added rowStyle and expandedRowStyle Properties on table row.
add examples/style.html

[coveralls]

Changes Unknown when pulling 8f04a8c on jun0205:master into ** on react-component:master**.

[coveralls]

Coverage remained the same at 97.326% when pulling 135d5cd on jun0205:master into 7b5e1a6 on react-component:master.

[coveralls]

Coverage remained the same at 97.34% when pulling 6cf1c81 on jun0205:master into c2473e6 on react-component:master.

[paranoidjk]

What's your use case?

I think this makes it too complicated, i think you can use rowClassName + css to do custom style staff.

[chats-is]

Tr style attribute.

[kianfang]

I'm really looking forward to adding these properties like expandedRowStyle、rowStyle...
It will help me to add CSS animations.

[kianfang]

@paranoidjk
可不可合并下，通过设置rowStyle属性，可以让{display: 'none'}设置不被写死，
这样就可以添加CSS动画了，来达到展开收起缓冲效果。

[yesmeck]

#171