rename master to main in package.json scripts too

package.json

@@ -17,7 +17,7 @@
   "scripts": {
     "preversion": "git stash && npm install && npm update && BROWSER=chrome BVER=stable CI=true npm test && git checkout -B bumpVersion && grunt build && grunt copyForPublish && git add package.json release/* && git commit -m 'Add adapter artifacts' --allow-empty",
     "version": "",
-    "postversion": "export GITTAG=\"echo $(git describe --abbrev=0 --tags | sed 's/^v//')\" && git push --force --set-upstream origin bumpVersion --follow-tags && git checkout gh-pages && git pull && cp out/adapter.js adapter.js && cp adapter.js adapter-`$GITTAG`.js && rm adapter-latest.js && ln -s adapter-`$GITTAG`.js adapter-latest.js && mkdir -p adapter-`$GITTAG`-variants && cp out/adapter.js adapter-`$GITTAG`-variants/ && cp out/adapter_*.js adapter-`$GITTAG`-variants/ && git add adapter.js adapter-latest.js adapter-`$GITTAG`.js adapter-`$GITTAG`-variants && git commit -m `$GITTAG` && git push --set-upstream origin gh-pages && git checkout master",
+    "postversion": "export GITTAG=\"echo $(git describe --abbrev=0 --tags | sed 's/^v//')\" && git push --force --set-upstream origin bumpVersion --follow-tags && git checkout gh-pages && git pull && cp out/adapter.js adapter.js && cp adapter.js adapter-`$GITTAG`.js && rm adapter-latest.js && ln -s adapter-`$GITTAG`.js adapter-latest.js && mkdir -p adapter-`$GITTAG`-variants && cp out/adapter.js adapter-`$GITTAG`-variants/ && cp out/adapter_*.js adapter-`$GITTAG`-variants/ && git add adapter.js adapter-latest.js adapter-`$GITTAG`.js adapter-`$GITTAG`-variants && git commit -m `$GITTAG` && git push --set-upstream origin gh-pages && git checkout main",
     "prepare": "grunt build",
     "prepublishonly": "npm test",
     "test": "grunt && mocha test/unit && grunt downloadBrowser && karma start test/karma.conf.js",