feat: Add CalendarSelector component and install new dependencies.

node_modules/github-from-package/example/package.json

@@ -0,0 +1,8 @@
+{
+  "name": "beep-boop",
+  "version": "1.2.3",
+  "repository" : {
+    "type" : "git",
+    "url": "git@github.com:substack/beep-boop.git"
+  }
+}

node_modules/github-from-package/example/url.js

@@ -0,0 +1,3 @@
+var github = require('../');
+var url = github(require('./package.json'));
+console.log(url);