begin onefour efforts

* BUGFIX #6
* Revise readme installation
* Work with CBQE_EF 1.1
Implement PHP version checking

* BUGFIX #1
* Implement PHP version checking
Update require & NAME
Use aihr_notice_updated
Always include settings class
Implement WordPress version checking
Squashed 'lib/aihrus/' content from commit 639684c

git-subtree-dir: lib/aihrus
git-subtree-split: 639684c58140e0b2711958c4a973e230d9ba4e0c
Merge commit 'ec9ab0f69f29acc82fbd7f1cdd482425d4a8be34' as 'lib/aihrus'