docs: fix broken links

Author: timdeschryver

CODE_OF_CONDUCT renamed to CODE_OF_CONDUCT.md

@@ -14,21 +14,21 @@ religion, or sexual identity and orientation.
 Examples of behavior that contributes to creating a positive environment
 include:
 
-* Using welcoming and inclusive language
-* Being respectful of differing viewpoints and experiences
-* Gracefully accepting constructive criticism
-* Focusing on what is best for the community
-* Showing empathy towards other community members
+- Using welcoming and inclusive language
+- Being respectful of differing viewpoints and experiences
+- Gracefully accepting constructive criticism
+- Focusing on what is best for the community
+- Showing empathy towards other community members
 
 Examples of unacceptable behavior by participants include:
 
-* The use of sexualized language or imagery and unwelcome sexual attention or
+- The use of sexualized language or imagery and unwelcome sexual attention or
   advances
-* Trolling, insulting/derogatory comments, and personal or political attacks
-* Public or private harassment
-* Publishing others' private information, such as a physical or electronic
+- Trolling, insulting/derogatory comments, and personal or political attacks
+- Public or private harassment
+- Publishing others' private information, such as a physical or electronic
   address, without explicit permission
-* Other conduct which could reasonably be considered inappropriate in a
+- Other conduct which could reasonably be considered inappropriate in a
   professional setting
 
 ## Our Responsibilities

CONTRIBUTING.md

@@ -0,0 +1,27 @@
+# Contributing
+
+Hi there, thanks for being willing to contribute!
+
+## Setup
+
+- Fork and clone the repository
+- Install dependencies via via `npm install`
+- Create a new feature branch via `git checkout -b feature-branch-name`
+
+## Testing
+
+- Run `npm run test:lib` to test the library
+- Run `npm run test:app` to test the application
+- Run `npm run build` to build the library
+
+## Push changes
+
+- Add the files you want to push via `git add filename`, or add everything via `git add .`
+- Commit these changes locally and give it a proper description via `git commit -m "my changes here"`
+- Push these changes to your fork via `git push`
+- Create a new pull request
+
+## Need some guidance?
+
+- [GitHub help](https://help.github.com/)
+- [How to Contribute to an Open Source Project on GitHub - by Kent C. Dodds](https://egghead.io/courses/how-to-contribute-to-an-open-source-project-on-github)