Update CHANGELOG.md with latest changes

Author: pixeltrix

CHANGELOG.md

@@ -1,15 +1,27 @@
+*   Respect `Accept` header when caching actions
+
+    Fixes #18.
+
+    *Andrew White*
+
+*   Support Rails 4.0, 4.1, 4.2, 5.0 and edge
+
+    *Eileen Uchitelle*, *Andrew White*
+
 *   Call `to_s` on the extension as it may be a symbol
 
-    Fixes #10
+    Fixes #10.
 
     *Andrew White*
 
+
 ## 1.1.1 (January 2, 2014)
 
 *   Fix load order problem with other gems
 
     *Andrew White*
 
+
 ## 1.1.0 (November 1, 2013)
 
 *   Allow to use non-proc object in `cache_path` option. You can pass an object that
@@ -30,6 +42,7 @@
 
     *Piotr Niełacny*
 
+
 ## 1.0.0 (February 28, 2013)
 
 *   Extract Action Pack - Action Caching from Rails core.