package scripts are run in subshells

There's no need to cd back to original directory because the package
script is executed within a subshell. Once the script completes, final
working directory is still unchanged

Author: jasonkarns

package.json

@@ -30,10 +30,10 @@
     "test:unit": "teenytest",
     "test:ci": "yarn run clean && yarn run compile && yarn run style && yarn run test:all && yarn run clean:dist && echo \"All done!\"",
     "test:typescript": "tsc --outDir generated/typescript -p regression/typescript && node generated/typescript/test.js",
-    "test:example:webpack": "cd examples/webpack && yarn install && yarn test && cd ../..",
-    "test:example:node": "cd examples/node && yarn install && yarn test && cd ../..",
-    "test:example:lineman": "cd examples/lineman && yarn install && yarn test && cd ../..",
-    "test:example:babel": "cd examples/babel && yarn install && yarn test && cd ../..",
+    "test:example:webpack": "cd examples/webpack && yarn install && yarn test",
+    "test:example:node": "cd examples/node && yarn install && yarn test",
+    "test:example:lineman": "cd examples/lineman && yarn install && yarn test",
+    "test:example:babel": "cd examples/babel && yarn install && yarn test",
     "test:example": "yarn run test:example:node && yarn run test:example:lineman && yarn run test:example:webpack && yarn run test:example:babel",
     "version:write": "echo \"export default '$npm_package_version'\" > src/version.js",
     "version:changelog": "if command -v github_changelog_generator &>/dev/null; then github_changelog_generator; git commit -m \"Changelog for $npm_package_version\" CHANGELOG.md; else echo Versioning requires you first run 'gem install github_changelog_generator' >&2; fi",