Update CONTRIBUTION.md

Author: YoKeyword

CONTRIBUTING.md

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+# Contribution Guideline
+
+Thanks for considering to contribute this project. All issues and pull requests are highly appreciated.
+
+## Pull Requests
+
+Before sending pull request to this project, please read and follow guidelines below.
+
+* Coding style: Follow the coding style used in Fragmentation.
+* Test: Make sure to test your code.
+
+## Issues
+Following information can help us to resolve the issue faster.
+
+* Library version
+* Logs
+* Screenshots