allow object for description prop

[mattkime]

Fixing prop definitions to match https://github.com/yahoo/react-intl/wiki/Components#message-descriptor

[yahoocla]

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[mattkime]

license is signed.

[papasmile]

+1 for trying to match up API with doc, very nice. AFAICT, it would be safe to use object with babel-plugin-react-intl since it just dumps descriptors via JSON.stringify[1] (haven't tried it, though).

A couple suggestions that might make Maintainers happy with your PR:

• Contribution Guide states "If you are adding new functionality, or fixing a bug, provide test coverage." [2] You could a test to test/unit/components/message.js by updating or copying 'renders a formatted message in a '[3] and passing in a description which is an object, then expect console not to report any warnings. They've done similarly in a different test in that same file [4].
• very minor: linted, but it looks like convention is to add a space after comma inside an array.

[1] https://github.com/yahoo/babel-plugin-react-intl/blob/ed5dd0004d3a9368d335bd08c11c0b2cff832e1d/src/index.js#L208
[2] https://github.com/yahoo/react-intl/blob/master/CONTRIBUTING.md#submitting-a-pull-request
[3] https://github.com/yahoo/react-intl/blob/e749a389313641eb3230954e19a0f1fa42bc6df2/test/unit/components/message.js#L38
[4] https://github.com/yahoo/react-intl/blob/e749a389313641eb3230954e19a0f1fa42bc6df2/test/unit/components/message.js#L63

[eilinora]

+1 for getting this merged, makes testing harder with the added noise this causes. Would appreciate this being merged!

[okuryu]

@papasmile Thanks for your suggestions.

• Contribution Guide states "If you are adding new functionality, or fixing a bug, provide test coverage." [2] You could a test to test/unit/components/message.js by updating or copying 'renders a formatted message in a '[3] and passing in a description which is an object, then expect console not to report any warnings. They've done similarly in a different test in that same file [4].

Sure. PR for CONTRIBUTING.md welcome.

• very minor: linted, but it looks like convention is to add a space after comma inside an array.

I think a space after comma in an array is a common practice in JavaScript. We also already run linting by ESLint, but lint rules change is welcome if we need a little work.

And this change looks good to me. Let's merge in this month if no concern by others.