Update CONTRIBUTING.md

CONTRIBUTING.md

@@ -1,41 +1 @@
-## Submitting useful bug reports
-
-Please search existing issues first to make sure this is not a duplicate.
-Every issue report has a cost for the developers required to field it; be
-respectful of others' time and ensure your report isn't spurious prior to
-submission. Please adhere to [sound bug reporting principles](http://www.chiark.greenend.org.uk/~sgtatham/bugs.html).
-
-## Development ideology
-
-Truths which we believe to be self-evident:
-
-- **It's an asynchronous world.**  Be wary of anything that undermines
-   async principles.
-
-- **The answer is not more options.**  If you feel compelled to expose
-   new preferences to the user it's very possible you've made a wrong
-   turn somewhere.
-
-- **There are no power users.** The idea that some users "understand"
-   concepts better than others has proven to be, for the most part, false.
-   If anything, "power users" are more dangerous than the rest, and we
-   should avoid exposing dangerous functionality to them.
-
-## Code style
-
-The amphp project adheres to the [PSR-2 style guide](https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-2-coding-style-guide.md
-).
-
-To apply code standards you can run `php-cs-fixer` with following composer command:
-
-```bash
-composer code-style
-```
-
-## Running the tests
-
-Run the test suite from root directory:
-
-```bash
-composer test
-```
+Please follow our [rules](https://amphp.org/contributing).