Create CONTRIBUTING.md

CONTRIBUTING.md

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+# How to Contribute
+
+We'd love to accept your patches and contributions to this project. There are
+just a few small guidelines you need to follow.
+
+## Version of C++
+This project is based on the C++17 standard and compiles as-is on most platforms 
+using either clang or g++. Do not use C++21 or C++23 features for now. Some core 
+libraries used in this project do not support C++21 or C++23 yet.
+
+## Variable Naming
+Naming of pretty much anything uses Pascal naming. Longer explicit names using casing. 
+Member variable naming adds a `_` at the end of the vars. Try to
+keep this standard going. Sometimes you must override a base class function and then of course
+you need to follow the base class.
+
+## This is a cmake project
+This is a cmake project, and you need to adhere to the cmake rules. If you need
+to add a package to the CMakeList, you need to ensure that the package is available
+on all required platforms and compiles. Remember that this project runs on Linux, OS X, 
+and the Raspberry PI.
+
+## Licensed packages
+When adding a package, you must also state the licensing for the package. MIT, BSD, Apache licenses
+are acceptable. No commercial licenses are allowed. 
+
+## clang formatting
+Please format your code using the included `.clang-format` file included in the project.
+
+```bash
+clang-format -i --style=<project root>/.clang-format myfile.cpp
+```
+
+## Pull Requests
+All submissions, including submissions by project members, require review. We
+accept GitHub pull requests. Please create a branch with the Jira name for addressing the issue you are fixing or the 
+feature you are implementing.
+Create a pull-request from the branch into master.