Simplify zip file build pipeline

gulpfile.esm.js

@@ -4,17 +4,16 @@ import pjson from './package.json';
 
 export default function() {
 	return src( [
-		'**/*',
-		'!src/**',
-		'!node_modules/**',
-		'!README.md',
-		'!.*',
-		'!package.json',
-		'!yarn.lock',
-		'!webpack.config.*',
-		'!tsconfig.*',
-		'!gulpfile.*',
-	] )
+		'dist/**/*',
+		'templates/**/*',
+		'tinymce/**/*',
+		'*.php',
+		'LICENSE',
+		'readme.txt',
+		'screenshot*.png',
+	], {
+		base: './',
+	} )
 		.pipe( zip( `cognito-forms-${ pjson.version }.zip` ) )
 		.pipe( dest( '.' ) );
 }