Merge branch 'master' into routes-for-topics-and-posts

Conflicts:
	.gitignore
Adding missing topics to post_spec posts
Deleting topic, specs
Merge branch 'topic-all-posts-method' into delete-endpoint-for-topics

Conflicts:
	.gitignore
	spec/models/post_spec.rb
Deleting associated Posts when deleting a topic.
Merge pull request #8 from justinbeal/delete-endpoint-for-topics

Delete endpoint for topics