Added release notes

Bubblesphere · Bubblesphere · commit 4573d2c7567c · 2018-07-22T14:52:42.000-04:00
diff --git a/README.md b/README.md
@@ -95,3 +95,6 @@ Initial release
 Added method set and made count parameter optional for atIndexRange
 - `set(index: number, value: bit)`
 - `atIndexRange(index: number, count?: number)` 
+
+### 1.2.0
+Added code coverage badge creation on running tests
