Revert "Move peer dependencies to package.json's peerDependencies object"
Revert "Move peer dependencies to package.json's peerDependencies object"

This reverts commit a15fb8251c249cddcb2f6ca3c01f9a4dfd9a8468.

dagopert/draft-js-plugins,nikgraf/draft-js-plugin-editor,dagopert/draft-js-plugins,draft-js-plugins/draft-js-plugins,nikgraf/draft-js-plugin-editor,dagopert/draft-js-plugins,draft-js-plugins/draft-js-plugins,draft-js-plugins/draft-js-plugins,nikgraf/draft-js-plugin-editor,koaninc/draft-js-plugins,draft-js-plugins/draft-js-plugins,koaninc/draft-js-plugins