[general] moving ios and android project under ./platform folder

scripts/nitpick/submodule-pin.js

@@ -0,0 +1,13 @@
+#!/usr/bin/env node
+const nitpick = require('.');
+const child_process = require('child_process');
+
+// Make sure that the mapbox-gl-js submodule pin is up to date
+const head = child_process.execSync('git -C mapbox-gl-js rev-parse HEAD').toString().trim();
+const revs = child_process.execSync(`git -C mapbox-gl-js branch -a --contains ${head}`).toString().split('\n');
+
+if (revs.indexOf('  remotes/origin/master') >= 0) {
+    nitpick.ok(`mapbox-gl-js submodule pin is merged to master`);
+} else {
+    nitpick.fail(`mapbox-gl-js submodule is pinned to ${head}, which isn't merged to master`);
+}