New installer logic
Starting from version 2.0.0 installer provides bootstrap command that is not related to Magento state anymore, therefore does not require intermediate setup:upgrade call and allow to automate build/bootstrap outside of runtime.
- CLI command is available at any Magento 2 state
- CLI command has new helpful tips on next actions after bootstrap and file generation
- README.md has been updated
- Copy queue has been encapsulated in Bootstrap class to support all Magento 2 states.