fix developer.md
fix doc bug
Merge branch 'dev' into build
build
Merge branch 'build' of github.com:sdc-alibaba/sui into build

Conflicts:
	docs/about.html
	docs/autocomplete.html
	docs/base_index.html
	docs/breadcrumb.html
	docs/button-groups.html
	docs/buttons.html
	docs/checkbox.html
	docs/datetimepicker.html
	docs/dialog.html
	docs/download.html
	docs/dropdown-js.html
	docs/dropdown.html
	docs/examples.html
	docs/form-validate.html
	docs/forms.html
	docs/global.html
	docs/grid.html
	docs/icons.html
	docs/index.html
	docs/intro.html
	docs/label.html
	docs/layout.html
	docs/loading.html
	docs/msgs.html
	docs/navbar.html
	docs/pagination-js.html
	docs/pagination.html
	docs/progress.html
	docs/steps.html
	docs/tab-js.html
	docs/tab.html
	docs/tables.html
	docs/tag.html
	docs/tooltip.html
	docs/tree-js.html
	docs/tutorial.html