Revert "chore(gitignore): Ignore webstorm's .idea folder"
Revert "chore(gitignore): Ignore webstorm's .idea folder"

This reverts commit 22936295b08f7a7f4c1d9a338b7e45e65b8a0ab6.

ember-learn/ember-api-docs,toddjordan/ember-api-docs,toddjordan/ember-api-docs,ember-learn/ember-api-docs