text: var gulp = require('gulp');
  var sass = require('gulp-sass');
  var sourcemaps = require('gulp-sourcemaps');
  var autoprefixer = require('gulp-autoprefixer');
  
  
  gulp.task('scss', function() {
      return gulp.src('sass/style.scss')
          .pipe(sourcemaps.init())
          .pipe(sass ({
              errLogConsole: true,
              outputStyle: 'nested',
              sourceComments: false,
          }).on("error", sass.logError))
  		.pipe(autoprefixer({
  				browsers:  [
  					'last 3 chrome versions',
  					'last 3 firefox versions',
  					'last 3 opera versions',
  					'last 3 safari versions',
  					'last 3 ios versions',
  					'android >= 4.0',
  					'ie >= 10' 	// change to `last 3 ie versions` after IE12  release.
  				]
  			}))
  		.pipe(sourcemaps.write())
  		.pipe(gulp.dest('css'))
  })
  
  
  gulp.task('default', ['scss'], function() {
      gulp.watch('sass/main.scss', ['scss'])
  });
  