fix(@schematics/angular): specify module option as a fix for the multiple module error

Author: kgajera

packages/schematics/angular/utility/find-module.ts

@@ -100,8 +100,9 @@ export function findModule(host: Tree, generateDir: string,
     if (filteredMatches.length == 1) {
       return join(dir.path, filteredMatches[0]);
     } else if (filteredMatches.length > 1) {
-      throw new Error('More than one module matches. Use skip-import option to skip importing '
-        + 'the component into the closest module.');
+      throw new Error(
+          'More than one module matches. Use the skip-import option to skip importing ' +
+          'the component into the closest module or use the module option to specify a module.');
     }
 
     dir = dir.parent;