Add forEachSelectors method

src/scripts/lib/foreach-selectors.js

@@ -0,0 +1,8 @@
+var forEachEls = require("./foreach-els")
+
+module.exports = function(selectors, cb, context, DOMcontext) {
+  DOMcontext = DOMcontext || document
+  selectors.forEach(function(selector) {
+    forEachEls(DOMcontext.querySelectorAll(selector), cb, context)
+  })
+}