diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..b251a24
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,8 @@
+CHANGELOG
+=========
+
+
+2.0.0 - 2016-09-04
+------------------
+
+- Initial release.
diff --git a/README.md b/README.md
index 92b7c1a..fc7a1f0 100644
--- a/README.md
+++ b/README.md
@@ -16,13 +16,13 @@ The preferred way to install this extension is through [composer](http://getcomp
 Either run
 
 ```shell
-php composer.phar require rob006/yii2-simple-auth "*"
+php composer.phar require rob006/yii2-simple-auth
 ```
 
 or add
 
 ```json
-"rob006/yii2-simple-auth": "*"
+"rob006/yii2-simple-auth": "^1.0"
 ```
 
 to the require section of your `composer.json` file.
diff --git a/src/ActionFilter.php b/src/ActionFilter.php
index 2535ed1..d4c4956 100644
--- a/src/ActionFilter.php
+++ b/src/ActionFilter.php
@@ -18,6 +18,7 @@
  * Action filter for validating simple auth token.
  *
  * @author Robert Korulczyk <robert@korulczyk.pl>
+ * @since 1.0.0
  */
 class ActionFilter extends \yii\base\ActionFilter {
 
@@ -164,7 +165,7 @@ protected function validate($token, $url) {
 
 	/**
 	 * Check if given timestamp has not expired.
-	 * 
+	 *
 	 * @param int $timestamp
 	 * @return bool True if timestamp has not expired, false otherwise.
 	 */
diff --git a/src/Authenticator.php b/src/Authenticator.php
index fe06202..df99602 100644
--- a/src/Authenticator.php
+++ b/src/Authenticator.php
@@ -15,6 +15,7 @@
  * Helper class for authentication requests.
  *
  * @author Robert Korulczyk <robert@korulczyk.pl>
+ * @since 1.0.0
  */
 abstract class Authenticator {
 
diff --git a/src/Token.php b/src/Token.php
index a67785b..bf1b7c5 100644
--- a/src/Token.php
+++ b/src/Token.php
@@ -18,12 +18,13 @@
  * Helper class for generate auth tokens.
  *
  * @author Robert Korulczyk <robert@korulczyk.pl>
+ * @since 1.0.0
  */
 class Token {
 
 	/**
 	 * Name of hashing algorithm used for generate token.
-	 * 
+	 *
 	 * @var string
 	 * @see https://secure.php.net/manual/en/function.hash.php
 	 */
@@ -66,7 +67,7 @@ public static function validate($token, $url, $time, $secret = null) {
 
 	/**
 	 * Validate secret key. If $secret is empty, Yii::$app->params['simpleauth']['secret'] is used.
-	 * 
+	 *
 	 * @param string|null $secret
 	 * @return string
 	 * @throws InvalidParamException