gulpfile.js

var gulp = require('gulp');
var sass = require('gulp-sass');
var runSequence = require('run-sequence');

gulp.task('scss', function() {
	return gulp.src(['src/scss/*.scss'])
		.pipe(sass())
		.pipe(gulp.dest('dist/css/'))
});

gulp.task('copyFiles', function() {
	return gulp.src(['src/**/*', '!src/scss', '!src/scss/**/*'])
		.pipe(gulp.dest('dist/'))
});

gulp.task('watch', function() {
	gulp.watch('src/scss/*.scss', ['scss']);
	gulp.watch('src/**/*', ['copyFiles']);
});

gulp.task('default', function() {
	return runSequence(
		'copyFiles',
		'scss',
		'watch'
	);
});