Allow manifoldjs CLI to retrieve package info when used as a module (not CLI) - Closes #13 , Closes #pwa-builder/PWABuilder-CLI#213

Author: f2bo

lib/packageTools.js

@@ -63,14 +63,22 @@ function downloadFile (inputUri, callback) {
 
 // returns package information (package.json) given a package name 
 function getPackageInformation (packageName) {
-  
+
   try {
     var packagePath = path.dirname(require.main.filename);
+    var modulesPath = path.join(packagePath, node_modules);
+
+    try { fs.statSync(modulesPath).isDirectory() }
+    catch (er) { 
+      modulesPath = path.resolve(packagePath, '..');  
+    }
+
     if (packageName) {
-      packagePath = path.join(packagePath, node_modules, packageName);      
+      packagePath = path.join(modulesPath, packageName);      
     }
-    
+
     packagePath = path.join(packagePath, packageJson);
+
     return require(packagePath);  
   }
   catch (err) {