Add v2 to master

package.json

src/contents/html.ts

src/contents/video.ts

src/index.ts

src/v1/author.ts

src/v1/content.ts

src/v1/epoc.ts

src/v1/index.ts

src/v1/question.ts

src/v1/types.ts

src/v2/achievement.ts

src/v2/content.ts

src/v2/epoc.ts

src/v2/index.ts

src/v2/question.ts

src/v2/rule.ts

src/v2/types.ts