feat(package.json): add "prop-types" to peerDependencies
feat(package.json): add "prop-types" to peerDependencies

* Upgrade peerDependencies to "react@^15.5.0"
* Original commit: 65631a5a34bcc44941e3e8a989c6a84d7941b1ba
* Original author: @WilcoFiers

tomchentw/react-prism,tomchentw/react-prism