Update CONTRIBUTING.md

Author: AlexsandroSA

CONTRIBUTING.md

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 # How to contribute
+
+>:+1::tada: First off, thanks for taking the time to contribute! :tada::+1:
+
+__Table Of Contents__
+ - [Suggesting Enhancements](#suggesting-enhancements)
+ - [Your First Contribution](#your-first-contribution)
+ - [Pull Requests](#pull-requests)
+ - [Code of Conduct](#code-of-conduct)
+ - [Our Standards](#our-standards)
+ - [Our Responsibilities](#our-responsibilities)
+
+### Suggesting Enhancements
+
+This section guides you through submitting an enhancement suggestion for __daily-programming-challenges__, including completely new features and minor improvements to existing suggestions. Following these guidelines helps maintainers and the community understand your suggestion :memo: and find related suggestions :mag_right:.
+
+Before creating enhancement suggestions, please check this list as you might find out that you don't need to create one. When you are creating an enhancement suggestion, please include as many details as possible. Fill in the template, including the steps that you imagine you would take if the feature you're requesting existed.
+
+### Your First Contribution
+
+Unsure where to begin contributing to __daily-programming-challenges__? You can start by looking through these `beginner` and `help-wanted` [issues](https://github.com/AlexsandroSA/daily-programming-challenges/issues)
+
+### Pull Requests
+
+ 1. Fork the [daily-programming-challenges](https://github.com/AlexsandroSA/daily-programming-challenges)
+ 2. Update the README.md with details of changes
+ 3. Make the [Pull Requests](https://help.github.com/articles/creating-a-pull-request/) and wait :bowtie:
+ 
+ :warning: __Do not include issue numbers in the PR title__
+ 
+## Code of Conduct
+
+### Our Pledge
+
+In the interest of fostering an open and welcoming environment, we as contributors and maintainers pledge to making participation in our project and our community a harassment-free experience for everyone, regardless of age, body size, disability, ethnicity, gender identity and expression, level of experience, nationality, personal appearance, race, religion, or sexual identity and orientation.
+
+### Our Standards
+
+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
+- Examples of unacceptable behavior by participants include:
+
+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 address, without explicit permission
+- Other conduct which could reasonably be considered inappropriate in a professional setting
+
+### Our Responsibilities
+
+Project maintainers are responsible for clarifying the standards of acceptable behavior and are expected to take appropriate and fair corrective action in response to any instances of unacceptable behavior.
+
+Project maintainers have the right and responsibility to remove, edit, or reject comments, commits, code, wiki edits, issues, and other contributions that are not aligned to this Code of Conduct, or to ban temporarily or permanently any contributor for other behaviors that they deem inappropriate, threatening, offensive, or harmful.