Adding peerDependenciesMeta information

[fabiomcosta]

This will make react-native-svg effectively optional, and avoid the warnings when installing svgs on web projects.

This is supported since npm 6.11: https://github.com/npm/cli/releases/tag/v6.11.0 yarn docs (but npm supports it as well as you can see on the previous link): https://next.yarnpkg.com/configuration/manifest#peerDependenciesMeta example: https://github.com/knex/knex/blob/master/package.json#L55-L71

[coveralls]

Pull Request Test Coverage Report for Build 61

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 99.34%

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Totals
Change from base Build 45:	0.0%
Covered Lines:	255
Relevant Lines:	255

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💛 - Coveralls