Fix version number

alancutter · alancutter · commit b47f04129018 · 2016-04-06T12:32:29.000+10:00
diff --git a/History.md b/History.md
@@ -1,4 +1,4 @@
-### 2.2.1 - *April 6 2016*
+### 2.2.0 - *April 6 2016*
   * Deprecated the use of hyphens in property names.
 
     For example, this is deprecated:
diff --git a/package.json b/package.json
@@ -5,7 +5,7 @@
     "type": "git",
     "url": "https://github.com/web-animations/web-animations-js.git"
   },
-  "version": "2.2.1",
+  "version": "2.2.0",
   "keywords": [
     "animations",
     "polyfill"

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-### 2.2.1 - April 6 2016`
	`1`	`+### 2.2.0 - April 6 2016`
`2`	`2`	`* Deprecated the use of hyphens in property names.`
`3`	`3`
`4`	`4`	`For example, this is deprecated:`