My Sketch > SVG > Iconfont solution in Gulp.

gulpfile.js

var gulp = require("gulp");
var sketch = require('gulp-sketch');
var iconfont = require('gulp-iconfont');
var iconfontCss = require('gulp-iconfont-css');

// Iconfont
var fontName = 'circlecons';
var runTimestamp = Math.round(Date.now()/1000);

gulp.task('icons', function(){
	return gulp.src('./icons/circlecons.sketch')
		.pipe(sketch({
			export: 'artboards',
			formats: 'svg',
			clean: true
		}))
		.pipe(gulp.dest('./src/img/icons/'))
		.pipe(iconfontCss({
			fontName: fontName,
			path: './src/css/templates/_icons.scss',
			targetPath: '../css/icons/_icons.scss',
			fontPath: '/fonts/'
		}))
		.pipe(iconfont({
			fontName: fontName,
			appendUnicode: true,
			fontHeight: 1000,
			normalize: true,
      formats: ['ttf', 'eot', 'woff', 'svg'],
      timestamp: runTimestamp
		 }))
		.pipe(gulp.dest('./src/fonts/'));
});