* remove global npm install of create-next-app
* add npx to create-next-app command in examples
* add bash to shell snippets
* add yarn create to next-app command in examples
* fix READMEs named with lowercase
* change READMEs to use UPPERCASE
* Make styled-jsx configurable
* Add styled-jsx-plugin-postcss example
* Add styled-jsx 2.1.0 with plugins support
* Move examples around and add description
* Add link to new example