chore(release): 3.0.0 [skip ci]

# [3.0.0](https://github.com/adobe/jsonschema2md/compare/v2.1.2...v3.0.0) (2019-07-24)

### Bug Fixes

* **cli:** fix breaking changes to readdirp API ([5150f3f6](https://github.com/adobe/jsonschema2md/commit/5150f3f))
* **package:** update readdirp to version 3.1.1 ([05cd51e0](https://github.com/adobe/jsonschema2md/commit/05cd51e)), closes [#127](https://github.com/adobe/jsonschema2md/issues/127)

### Build System

* **package:** require minimum node version: 8 ([a9ec9355](https://github.com/adobe/jsonschema2md/commit/a9ec935))

### BREAKING CHANGES

* **package:** Node 7 and lower are no longer supported, Node 8 is now the minimum version