Added angular-librarian for manage library

tasks/copy-build.js

@@ -0,0 +1,16 @@
+'use strict';
+
+const fs = require('fs-extra');
+
+// copy all src files -> build
+const copyToBuild = (buildDir, sourceDir) => {
+    fs.ensureDirSync(buildDir);
+    fs.emptyDirSync(buildDir);
+    fs.copySync(sourceDir, buildDir);
+};
+
+module.exports = copyToBuild;
+
+if (!module.parent) {
+    copyToBuild('./build', './src');
+}