Add contributing doc

CONTRIBUTING.md

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+# Contributing to Annotation Command Framework
+## The Golden Rule: Keep it small, work incrementally!
+
+Unlike most other projects that won't take your PR every possible color of kitten can be considered, ACF prefers that you keep your PR's small, and work incrementally.
+
+Try to complete work to a small enough unit that it is mergeable.
+
+There are plenty of large systems in ACF that has been built in small units. contributors are welcome to help build the 
+larger systems that power ACF by contributing small units of the feature. 
+
+The larger a PR becomes, the more time it takes to review, and the bigger risk of change comes. Keep it simple!
+
+Leave code in a package-private access level and then it will be promoted to public once we are ready to open it up for use.
+
+## Keep major formatting and/or docs changes to existing code as completely separate PR's, but again, incremental
+Please keep formatting improvements and documentation to existing code (meaning, code that is not part of your own feature API)
+as standalone PR's. In other words, don't submit a PR that changes behavior or adds features, but also changes 10 other files
+unrelated to the PR just to improve things.
+
+Keep them separate, so they can be reviewed and pulled separately.
+
+Additionally, keep them small and incremental!
+
+## Discuss with Aikar before starting any major behavior change / annotation addition
+Before you go spending a lot of time on a PR that isn't resolving an issue that Aikar filed, please consult with Aikar
+on Discord or IRC about the idea, to ensure it fits well with the projects goals.
+
+ACF is moving to a very extensible goal for the 1.0.0 release, with powerful custom annotation support.
+
+I want to avoid adding new stuff that will then be quickly deprecated when the more preferred approach comes out.
+
+## Translations
+New messaging should add respective english Message Properties. if you know some of the other languages already translated,
+feel free to go ahead and add the translations for your new feature too. English is the only required language for a new feature.
+
+Translators, I am leaving it up to the community to review and vet translations. If you see some bad translations, please
+submit a PR to correct them!
+
+Additionally, if you help translate messages for ACF, please follow the repo and keep up with new commits and watch for
+new messages, to keep the non english languages caught up.
+
+

LICENSE.md

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-MIT License
+The MIT License (MIT)
 
 Copyright (c) 2015-2018 Daniel Ennis and Contributors