diff --git a/CHANGELOG.md b/CHANGELOG.md
index 86b2262..d668043 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,19 +2,42 @@
 
 All Notable changes to `sass-config-manager` will be documented in this file
 
-## NEXT - YYYY-MM-DD
+## 2.0.4 Release
 
 ### Added
-- Nothing
+- infos to CHANGELOG
+- to README a how to use this library.
+
+## 2.0.3 Release
+
+### Added
+- added sache.json, and keys to sache.json, bower.json and package.json.
+
+## 2.0.2 Release
+
+### Fixed
+- bower.json and package.json main tag.
+
+## 2.0.1 Release
+
+### Fixed
+- cs-fixes
+
+## 2.0.0 Release
+
+### Added
+- added tests for config-set(), config-get(), config-has()
 
 ### Deprecated
 - Nothing
 
 ### Fixed
-- Nothing
+- many cs-fixes
+- some bugs in config-set() if a single key was added.
 
 ### Removed
-- Nothing
+- config-bind()
+- config-remove()
 
 ### Security
-- Nothing
\ No newline at end of file
+- Nothing
diff --git a/README.md b/README.md
index 404da71..301c84d 100644
--- a/README.md
+++ b/README.md
@@ -42,6 +42,52 @@ Please see [CHANGELOG](CHANGELOG.md) for more information what has changed recen
 grunt test
 ~~~
 
+## How to
+
+### Usage
+Include this library. If you use bower ``@import 'bower_components/sass-config-manager/src/scss/config-manager';`` or ``@import 'node_modules/sass-config-manager/src/scss/config-manager';``
+
+### Set default settings
+~~~scss
+// Default configuration settings
+// Passing true to the 3rd parameter,
+// the value is assigned to the configuration path as the default
+@include config-set('color.black', #000, true);
+@include config-set('color.white', #fff, true);
+@include config-set('single-key', red, true);
+
+// or assign values to a configuration path by using Map
+@include config-set('color', (black: #000, white: #fff), true);
+~~~
+
+### Get your settings
+~~~scss
+body {
+    color: config-get('color.black');  // #000
+    background-color: config-get('color.white');  // #fff
+}
+~~~
+
+### Compatibility
+~~~scss
+// Variables
+$color-black: #000 !default;
+$color-white-bg: #fff !default;
+
+$color: (
+    fg: $color-black,
+    bg: $color-white-bg
+) !default;
+
+// config-set()
+@include config-set('color', $color, true);
+
+body {
+    color: config-get('color.fg');  // #666666
+    background-color: config-get('color.bg');  // white
+}
+~~~
+
 ## Contributing
 
 Please see [CONTRIBUTING](CONTRIBUTING.md) for details.
diff --git a/bower.json b/bower.json
index 9553cea..0dab24f 100644
--- a/bower.json
+++ b/bower.json
@@ -1,6 +1,6 @@
 {
   "name": "growcss-sass-config-manager",
-  "version": "2.0.3",
+  "version": "2.0.4",
   "homepage": "http://growcss.com/",
   "authors": [
     "Daniel Bannert <d.bannert@anolilab.de>"
diff --git a/package.json b/package.json
index a223bda..5b3dece 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "growcss-sass-config-manager",
-  "version": "2.0.3",
+  "version": "2.0.4",
   "description": "A dot-syntax configuration (Map) library for Sass (mixin / function).",
   "author": {
     "name": "Daniel Bannert",