Release 3.0.0

• doc(README): fix wrong path (9add231)
• doc(README): update docs (98c0aaf)
• fix(lint): fix lint errors (e8eb0b9)
• feat(gulp): add build:index (31840ed)
• fix(lint): fix lint errors (982f0eb)
• fix(lint): fix lint errors (02dc21d)
• fix(lint): fix lint errors (348f1ad)
• fix(lint): fix lint errors (b7d673a)
• fix(lint): fix lint errors (b550d32)
• fix(lint): fix lint errors and remove no-unresolved rule (97a2062)
• fix(eslint): disable resolver (112395b)
• feat(lint): add resolve script (ed7ed68)
• fix(lint): fix linting errors (d353c74)
• fix(lint): fix lint errors (aa7df98)
• feat(eslint): ignore template directory (8bcc688)
• fix(lint): fix auto-fixable errors (ff283cc)
• fix(eslint): remove modules from ignore (c9d0f1a)
• feat(eslint): add eslint to this repo itself (3b20ee4)
• fix(lint): remove import settings (ffd1574)
• fix(eslintrc): remove not existent plugin (7534446)
• feat(gulp): build also index.js (d23d144)
• feat(server): add client server (44bfb23)
• feat(package): update eslint (3e350ae)
• feat(lint): update settings to airbnb - webpack template based (df30173)
• fix(gulp-tasks): write sourcemaps to files instead of embed (f4e2af3)
• fix(travis): apply workaround travis-ci/travis-ci#8836 (9f5285b)
• feat(travis): remove node 6 and 7 (90cc789)