Add code of conduct, contributing guide, PR template, update copyright dates

CODE_OF_CONDUCT.md

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+This project has adopted the [Microsoft Open Source Code of Conduct](https://opensource.microsoft.com/codeofconduct/). For more information see the [Code of Conduct FAQ](https://opensource.microsoft.com/codeofconduct/faq/) or contact [opencode@microsoft.com](mailto:opencode@microsoft.com) with any additional questions or comments.

CONTRIBUTING.md

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+# How to Contribute
+
+If you're interested in contributing, take a look at the general [contributer's guide](https://github.com/Microsoft/ApplicationInsights-Home/blob/master/CONTRIBUTING.md) first.
+

LICENSE

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 The MIT License (MIT)
 
-Copyright (c) 2015 Microsoft
+Copyright (c) 2015-2017 Microsoft
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

PR_TEMPLATE.md

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+Fix # .
+
+
+For significant contributions please make sure you have completed the following items:
+
+- [ ] Design discussion issue #
+- [ ] Changes in public surface reviewed
+- [ ] CHANGELOG.md updated