feat: invoice, estimate and receipt printing.

server/scripts/gulpfile.js

@@ -0,0 +1,15 @@
+const gulp = require('gulp');
+const sass = require('sass');
+const gulpSass = require('gulp-sass')(sass); // Gulp pluign for Sass compilation.
+const mergeStream = require('merge-stream');
+const config = require('./gulpConfig');
+
+gulp.task('styles', () => {
+  const builds = config.style.build.map((build) => {
+    return gulp
+      .src(build.src)
+      .pipe(gulpSass(config.style.sass))
+      .pipe(gulp.dest(build.dest));
+  });
+  return mergeStream(builds);
+});