v1.2

1. Add phpmyadmin and redismyadmin
2. Change directory structure
3. Install mcrypt and opcache base on php version
4. Add swoole extension
5. Add multi php version co-exists
6. Merge 2 demo website directory to one
7. Display extensions name and version in demo code
8. Config php.ini and mysql.conf default timezone to Asia/Shanghai
9. Add .dockerignore
10. Add multi-core compilation support