Update CHANGELOG

Author: Temikus

CHANGELOG.md

@@ -6,12 +6,23 @@ This project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html
 
 ## Next
 
+### User-facing
+
+- \#435 Added additional examples for attached disks usage. [temikus]
+
 ### Development changes
 
 #### Fixed
 
-- \#425 Fix bundling in development environment on JRuby [temikus]
+- \#425 Miscellaneous dev improvements around JRuby and disk handling [temikus]
+  - Fix bundling in development environment on JRuby
   - Adding JRuby 9.1 into Travis
+  - Consolidated logic of `Disk.get_as_boot_disk` and increase doc coverage of
+    disk-associated methods.
+  - Added integration tests for disk snapshots + a guard method for 
+    `Snapshot.add_labels`
+
+- \#435 
 
 ## 1.8.1