* removed builded code
* refactored react integration (in progress)
* moved maintainers guide to a separate page

* updated example apps
* improved packages documentation
* updated packages version
* updated angular lib build process
* added dist folders to gitignore

* angular README.md fix

* react README.md fix

* updated nextjs example app
* angular and react docs fixes

Co-authored-by: Vladimir Klimontovich <vladimir@jitsu.com>