Added a basic readme

README.md

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+# LiveLink Aerospace Recruitment
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+Well done finding this repository!  Please let us know if you discovered this during you interview preparation so we can commend your efforts.  In return, feel free to have a nosey around the repository and familiarise yourself some of the code you may be asked about during your technical interview!
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+There are no gotchas here and we deliberately do not have a mark scheme nor a list of what we think is worth discussing.  We will simply talk about different aspects of the code, potential problems, improvements, etc.  I am not looking for a perfect solution, but rather a demonstration of your thought process and how you approach problems.