Update package.json license

package.json had the wrong license.
Use the Apache 2.0 license defined at
https://github.com/openbmc/phosphor-webui/blob/master/LICENSE

Tested: npm install
Change-Id: I82e94b5261fa159bb8066101199c539725b0f782
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/package.json b/package.json
index 904a86d..2055895 100644
--- a/package.json
+++ b/package.json
@@ -78,7 +78,13 @@
     "webpack-cli": "^3.3.6",
     "webpack-dev-server": "^3.7.2"
   },
-  "license": "MIT",
+  "license": "Apache-2.0",
+  "licenses": [
+    {
+      "type": "Apache-2.0",
+      "url": "http://www.apache.org/licenses/LICENSE-2.0"
+    }
+  ],
   "engines": {
     "node": ">=4.2.6",
     "npm": ">=5.6.0"