Add v2.0.1 to CHANGELOG.

Author: Robert Jackson

CHANGELOG.md

@@ -1,5 +1,16 @@
 ## v2.0.0 (2017-10-03)
 
+
+## v2.0.1 (2017-11-16)
+
+#### :bug: Bug Fix
+* [#55](https://github.com/ember-cli/broccoli-uglify-sourcemap/pull/55)  Ignore missing sourcemap if referenced file does not exist. ([@Turbo87](https://github.com/Turbo87))
+
+#### Committers: 1
+- Tobias Bieniek ([Turbo87](https://github.com/Turbo87))
+
+## v2.0.0
+
 #### :rocket: Enhancement
 * [#52](https://github.com/ember-cli/broccoli-uglify-sourcemap/pull/52) Update dependencies. ([@Turbo87](https://github.com/Turbo87))