Init.
Fix typo.
Add version alias.
Fix installation path.
Fix namespace.
Revert "Fix namespace."

This reverts commit 8549350d4916dd53a5e98ba0e29f86231424f742.
Merge branch 'develop'
Fix composer.
Downgrade php version.
Adjust requirements versioning.
Merge pull request #1 from bcho/master

添加 1.0.0 版本