Spellcheck middleware added to JS repo

[stephanbisser]

I added the spellcheck middleware based on Bing Spell Check similar to the text analytics middleware @szul added...

[szul]

Go ahead and update the root README to add your package information, and update the CODEOWNERS file to add your package and your GitHub username. Then I think it's fine to merge.

@garypretty What's the general consensus on logging to the console or standard out? Should this be excluded from production packages to avoid additional noise/file consumption?

[szul]

[stephanbisser]

PR merged - done

[iMicknl]

Are ms-rest-azure and restify dependencies for this library? I doesn't look like they are used in the middleware.

[szul]

The test bot in the test folder is using restify. Could probably make this a dev dependency. My next package is going to implement the test adapter and mocha for tests, so we can use that as a template for unit tests moving forward.

[iMicknl]

Instead of moving restify do devDepencies, my advise would be to create a samples folder like the dotNet repo has. And keep the test folder purely for unit tests.

[szul]

Once I put in TestAdapter unit testing along with mocha, we can follow that pattern for tests, and, yes, these test bots can then become samples.