Add Apache 2.0 license

LICENSE

@@ -0,0 +1,13 @@
+Copyright 2017 Socrata, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.

package.json

@@ -34,7 +34,12 @@
     "url": "git+https://github.com/socrata/cdc-indicator.git"
   },
   "author": "Hiko Naito, Socrata",
-  "license": "MIT",
+  "licenses": [
+    {
+      "type": "Apache-2.0",
+      "url": "http://www.apache.org/licenses/LICENSE-2.0"
+    }
+  ],
   "bugs": {
     "url": "https://github.com/socrata/cdc-indicator/issues"
   },