Disable react/jsx-curly-brace-presence

[tetsuharuohzeki]

This rule is too eager. This misses to detect the error and too noisy.

[tetsuharuohzeki]

see #46

[tetsuharuohzeki]

• For children, I think we enable this. but the current rule impl. is pretty buggy and noisey. It's better to disable it.
• For props, inn JSX syntax, props is not a string in many cases. And in plain JavaScript worlds, we don't have any static type checks, we need think about whether we should add a bracket or not by the type of props. It's pretty tired thing. For sorting style and avoid this tired thing, I prefer to write bracket always.