Update and rename .github/CONTRIBUTING.md to CONTRIBUTING.md

Author: febus982

.github/CONTRIBUTING.md renamed to CONTRIBUTING.md

@@ -1,6 +1,6 @@
 ## Contributing
 
-Hi there! We're thrilled that you'd like to contribute to this project. Your help is essential for keeping it great.
+Hi there! I'm thrilled that you'd like to contribute to this project. Your help is essential for keeping it great.
 
 Contributions to this project are [released](https://help.github.com/articles/github-terms-of-service/#6-contributions-under-repository-license) to the public under the project's open source license.