Release 2.2.1 (#55)

* Release 2.2.1

* Use caret for peer dependency

CHANGELOG.md

 # Changelog
 
+## 2.2.1 (2019-07-22)
+
+### Changes:
+* Renamed package to `@openzeppelin/contracts-ethereum-package`. ([#54](https://github.com/OpenZeppelin/openzeppelin-contracts-ethereum-package/pull/54))
+
 ## 2.2.0 (2019-03-14)
 
 ### New features:

package.json

 {
   "name": "@openzeppelin/contracts-ethereum-package",
-  "version": "2.2.1-rc.0",
+  "version": "2.2.1",
   "description": "Secure Smart Contract library for Solidity",
   "files": [
     "build",
@@ -63,6 +63,6 @@
     "@openzeppelin/upgrades": "2.5.0"
   },
   "peerDependencies": {
-    "@openzeppelin/upgrades": "2.5.0"
+    "@openzeppelin/upgrades": "^2.5.0"
   }
 }