Update changelogs

CHANGELOG-1.1.md

@@ -0,0 +1,15 @@
+CHANGELOG
+=========
+
+This changelog references the relevant changes done in minor version updates.
+
+1.1.0-BETA1 (xxxx-xx-xx)
+------------------
+
+All issues and pull requests under this release may be found under the
+[1.1.0](https://github.com/alcaeus/mongo-php-adapter/issues?q=milestone%3A1.1.0)
+milestone.
+
+ * [#127](https://github.com/alcaeus/mongo-php-adapter/pull/127) reads the `code`
+ and `scope` properties of `MongoDB\BSON\Javascript` objects when converting them
+ to `MongoCode` objects.

UPGRADE-1.1.md

@@ -1,5 +0,0 @@
-PGRADE from 1.0 to 1.1
-=======================
-
-Pull requests completed for the 1.1.0 release:
-