Missing entry in mps-platform-docs for json importer

[arimer]

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In mbeddr we support already the feature of importing json files or pasting content of json files in the contenxt of the com.mbeddr.mpsutil.json language. However our documentation does not mention those features at the moment.

See: http://mbeddr.com/mps-platform-docs/platform_essentials/mpsutils/importer_and_exporter/