Update CONTRIBUTING.md

Author: zitros

CONTRIBUTING.md

@@ -1,7 +1,12 @@
-Contributing Guide
-==================
+Contributing Guidelines
+=======================
 
-## Any fixes or propositions are very welcome, just a couple of very basic guidelines:
-* Use spaces instead of tabs;
-* Comment well every new contribution;
-* Feel free to create a discussion or a new issue for every new contribution.
+We are happy to see anyone who is interested in improving the WebTerminal project!
+All the bugs you find, issues you discover and things you report make WebTerminal project grow!
+
+Feel free to [submit](https://github.com/intersystems-ru/webterminal/issues) any questions, issues, feature requests or bug reports to this project.
+
+If You Want To Implement Something...
+=====================================
+
+Please, read [Contributing Guidelines](http://intersystems-ru.github.io/webterminal/#docs.5) at the project's page. This will be useful if you want to implement some features or fix something by yourself. This project is always open for pull requests!