add readme/license/contributing

CONTRIBUTING.md

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+By contributing to this project, you agree to irrevocably release your contributions under the same license as this project. See README.md for more details.

LICENSE

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+MIT License
+
+Copyright (c) 2017 Aaron Parecki
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+p3k\utils
+=========
+
+This project provides several helpful utilities for working with PHP projects, and is used by https://p3k.io applications.
+
+* `p3k\date` - helpful functions for working with dates and timezones
+* `p3k\url` - helpful functions for parsing and building URLs
+* `p3k\cache` - a simple caching helper backed by Redis
+* `p3k\utils` - miscellaneous functions
+* `p3k\global` - sets the timezone to UTC (you're already storing all your dates in UTC, right?)
+
+PHP Support
+-----------
+
+This project should work in all versions of PHP 5.5 and newer.
+