bui enovell定制版

本库fork自dxq613/bui，遵循LSP原则。与原版本不同处会在本文中进行统一说明，不同细节会在对应文件夹处进行说明。

Name		Name	Last commit message	Last commit date
Latest commit History 647 Commits
assets		assets
build		build
perform		perform
src		src
test		test
tools		tools
.gitignore		.gitignore
BUI190529.docx		BUI190529.docx
CONTRIBUTING.md		CONTRIBUTING.md
README.md		README.md
build.bat		build.bat
build.xml		build.xml
gulpfile.js		gulpfile.js
package.json		package.json

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