Update extractor to run on every commit

scripts/extract.js

@@ -13,13 +13,16 @@ const config = require('../config');
 const SNIPPETS_PATH = `./${config.snippetPath}`;
 const OUTPUT_PATH = `./${config.snippetDataPath}`;
 
-// Check if running on Travis, only build for cron jobs and custom builds
+// Terminate if parent commit is a Travis build
 if (
   util.isTravisCI() &&
-  process.env['TRAVIS_EVENT_TYPE'] !== 'cron' &&
-  process.env['TRAVIS_EVENT_TYPE'] !== 'api'
+  /^Travis build: \d+/g.test(process.env['TRAVIS_COMMIT_MESSAGE'])
 ) {
-  console.log(`${green('NOBUILD')} snippet extraction terminated, not a cron or api build!`);
+  console.log(
+    `${green(
+      'NOEXTRACT',
+    )} Snippet extraction terminated, parent commit is a Travis build!`,
+  );
   process.exit(0);
 }