Update CONTRIBUTING.md

CONTRIBUTING.md

@@ -1,12 +1,29 @@
 # Contributing to Olive
 
-Thank you for your interest in contributing to Olive! In order to keep the code as readable and maintainable as possible, code submitted should abide by the following standards:
+Thank you for your interest in contributing to Olive!
 
-### Standards
+## Reporting issues
 
-When contributing to Olive, it's recommended to use the following rules:
+Bug reports help to make the software more stable and usable.
+Please read the pinned [issue #1175](https://github.com/olive-editor/olive/issues/1175)
+for guidelines before you create a new issue.
 
-* The code style generally follows the [Google C++ Style Guide](https://google.github.io/styleguide/cppguide.html) including, but not limited to:
+## Writing code
+
+Code contributions are welcome. Note that the code base is rapidly changing in
+the current stage of development however. There is some documentation in the form
+of code comments, including Javadoc in header files. Feel free to reach out via
+an issue or pull request if you have questions about the architecture or
+implementation details.
+
+### Code Standards
+
+In order to keep the code as readable and maintainable as possible, code
+submitted should abide by the following standards:
+
+* The code style generally follows the
+  [Google C++ Style Guide](https://google.github.io/styleguide/cppguide.html)
+  including, but not limited to:
   * Indentation is 2 spaces wide, spaces only (no tabs)
   * `lowercase_underscored_variable_names`
   * `lowercase_underscored_functions()` or `SentenceCaseFunctions()`