feat(generate): support all 3 package locations

During the transition to ionic-angular package name, tooling could be
located in 3 places: ionic-framework, ionic-framework/tooling or
ionic-angular/tooling.

Author: tlancina

lib/ionic/generate.js

@@ -25,11 +25,7 @@ IonicTask.prototype.run = function(ionic, argv) {
     var generator = argv._[1];
     var name = argv._[2] //TODO support multiple names
 
-    try {
-      ionicModule = require(path.join(process.cwd(), 'node_modules', 'ionic-framework'));
-    } catch (err) {
-      Utils.fail(err);
-    }
+    var ionicModule = loadToolingModule();
 
     if (argv.list) {
       ionicModule.Generate.printAvailableGenerators();
@@ -54,4 +50,39 @@ IonicTask.prototype.run = function(ionic, argv) {
   }
 }
 
+function loadToolingModule(){
+  //First try node_modules/ionic-angular/tooling
+  var toolingPath, ionicModule;
+  try {
+    toolingPath = path.join(process.cwd(), 'node_modules', 'ionic-angular', 'tooling');
+    ionicModule = require(toolingPath);
+  } catch (err) {
+    // if this isn't found, that's fine, check for ionic-framework
+    if (err.code !== 'MODULE_NOT_FOUND') {
+      Utils.fail('Error when requiring ' + toolingPath + ':\n  ' + err);
+    }
+  }
+
+  //Then try node_modules/ionic-framework/tooling
+  if (!ionicModule) {
+    try {
+      ionicModule = require(path.join(process.cwd(), 'node_modules', 'ionic-framework', 'tooling'));
+    } catch (err) {
+      if (err.code === 'MODULE_NOT_FOUND') {
+        Utils.fail('No ionic-angular or ionic-framework package found, do you have Ionic installed?');
+      }
+    }
+  }
+
+  //Last, try node_modules/ionic-framework (beta.1 and below)
+  if (!ionicModule) {
+    try {
+      ionicModule = require(path.join(process.cwd(), 'node_modules', 'ionic-framework'));
+    } catch (err) {
+      Utils.fail(err);
+    }
+  }
+  return ionicModule;
+}
+
 exports.IonicTask = IonicTask;