Add link to xcsharp gitter room in docs

[ErikSchierboom]

I've just created a Gitter room for this repository at: https://gitter.im/exercism/xcsharp We should add this link to the documentation.

[ErikSchierboom]

The link should be added to the Social Media section of the docs/RESOURCES.md file.

[jmbradnan]

I am looking for a first patch - mind if I pick this one up?

[ErikSchierboom]

Not at all. Be my guest!

[jmbradnan]

great, since I haven't done this before I may have questions, best to use the gitter room for those? Is this http://exercism.io/languages/csharp/contribute the best place to get started if you are a first time contributor?

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On Fri, Feb 24, 2017 at 12:55 PM, Erik Schierboom ***@***.***> wrote: Not at all. Be my guest! — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#208 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AHbU2XwvA1idy3sHXB3hDx_7Iw7J4Pt0ks5rf0PLgaJpZM4MH2XS> .

[ErikSchierboom]

Yes, the gitter room is best suited for questions. The contributions page on exercism.io gives you an idea on what you could be working on. For more concrete tasks, please check the issues section of this repository. Enjoy!