Create CONTRIBUTING.md

CONTRIBUTING.md

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+# Contribution Guidelines
+
+Please ensure your pull request adheres to the following guidelines:
+
+- Search previous suggestions before making a new one, as yours may be a duplicate.
+- Make an individual pull request for each suggestion.
+- Use the following format: `[PACKAGE](LINK) - DESCRIPTION. ![LANGUAGE]`
+- New categories, or improvements to the existing categorization are welcome.
+- Keep descriptions short and simple, but descriptive.
+- End all descriptions with a full stop/period.
+- Check your spelling and grammar.
+- Make sure that your suggestion is positioned as the last item category.
+- Make sure your text editor is set to remove trailing whitespace.
+
+#### Deleting 
+
+Typical reasons for deleting project:
+
+- Doesn't build in the current Xcode
+- No updates / no longer works
+- Deprecated
+- Lacks license
+
+#### Projects are ineligible if:
+
+- Lack recent commit
+- Not written in English
+- README is not clear
+
+Your contributions are always welcome!  Thank you for your suggestions! :smiley: