Merge pull request #150 from sjkummer/switch-to-gulp-uglify-es

switch to gulp-uglify-es

Author: sjkummer

gulpfile.js

@@ -4,7 +4,7 @@ var browserify = require('browserify');
 var nodeResolve = require('resolve');
 var source = require('vinyl-source-stream');
 var buffer = require('vinyl-buffer');
-var uglify = require('gulp-uglify');
+var uglify = require('gulp-uglify-es').default;
 var sourcemaps = require('gulp-sourcemaps');
 var log = require('fancy-log');
 var exorcist = require('exorcist');