New contributing guide

CONTRIBUTING.md

@@ -1,34 +1,18 @@
 # Contributing to Shower
 
-You’re always welcome to contibute! There are seven repositories in Shower project:
-
-- [Core](https://github.com/shower/core) of Shower
-- [Shower](https://github.com/shower/template) template
-- [Ribbon](https://github.com/shower/ribbon) theme for Shower
-- [Bright](https://github.com/shower/bright) theme for Shower
-- [Jekyller](https://github.com/shower/jekyller) generator for Shower
-- [Sho.io](https://github.com/shower/sho.io) online service
-- [Shwr.me](https://github.com/shower/sho.io) service project
-
-The most important part of the project is the [Core](https://github.com/shower/core) repository, containing [shower.js](https://github.com/shower/core/blob/master/shower.js) file.
-
-## Issues
-
-Before contributing to Shower, please read through [Issues](https://github.com/shower/shower/issues) to see open bugs and feature requests. If you have any feature to add to Shower or found a bug and want to fix it, please make sure you file an issue first.
+You’re always welcome to contibute! Before contributing to Shower, please read through unified [issues list](https://github.com/shower/shower/issues) to see open bugs and feature requests. If you have any feature to add to Shower or found a bug and want to fix it, please make sure you [file an issue](https://github.com/shower/shower/issues/new) first.
 
 ## Process
 
-To contribute to Shower fork needed repository and start making changes. Don’t forget to add upstream link to original repository and keep your fork updated. Once you finished, send pull request back to original repository and supply clear description or link to existing issue.
+Fork needed repository, create a brach for each feature or issue you’re dealing with and start making changes. Make sure you code doesn’t break tests if there are any. Once you’re finished, send pull request back to original repository: one feature or bug fix — one pull request, please don’t combine non-relevant changes into one pull request. Supply clear description of your changes and a link to existing issue.
 
 ## Code style
 
-Please keep existing code style while contributing to Shower and be ready for code review by Shower maintainers. It’s strongly recommended to install [EditorConfig](http://editorconfig.org) extension to your editor and validate your JavaScript changes using [JSHint](http://jshint.com/).
-
-By historical reasons, Shower project is using tabs instead of spaces for code indentation. It’s not a big deal to keep this rule while contributing using you code editor options, even if your code style is 13.4 spaces.
+Please preserve existing code style while contributing to Shower and be ready for code review by Shower maintainers. It’s strongly recommended to install [EditorConfig](http://editorconfig.org) extension to your editor and validate your JavaScript changes using [JSHint](http://jshint.com/).
 
 ## Language
 
-English is the main language for Shower project. All discussions and commit messages should be in English, no matter if it’s good or bad. The second language of Shower is Russian. Offical Shower themes are always compatible with Cyrillic and Russian typography. All documentation to Shower is always localized to Russian.
+English is the main language for Shower project. All discussions and commit messages should be in English, no matter if it’s good or bad. The second language of Shower is Russian. Official Shower themes are always compatible with Cyrillic and Russian typography. All documentation to Shower is always localized to Russian.
 
 ---
-If you have any questions, please ask [@shower_me](http://twitter.com/shower_me/) or file an [issue](https://github.com/shower/shower/issues/new).
+Licensed under [MIT License](LICENSE.md).