refactor(topicData): update method

Signed-off-by: A. Prooks <aprooks@live.ru>
Merge pull request #47 from aprooks/feature/topics

refactor in topicData
Merge pull request #10 from ChrisBoesch/master

merging back
Merge branch 'master' into feature/topicAndVideos

Signed-off-by: A. Prooks <aprooks@live.ru>

Conflicts:
	api/topicsData.js