Batch specs generator not working

[mividedaninni]

Issue: the single file command works, but the batch command seems don't.

Steps to reproduce

1. run npm i -D ngx-spec to add ngx-spec to an existing project;
2. run ng g ngx-spec:specs '**/*' throws Nothing to be done.;
3. tried to change to inner folder, than run 2) give same results;
4. tried to change path in command, eg. ng g ngx-spec:specs 'myfolder/**/*' gives same;
5. tried to run ng g ngx-spec:specs 'myfolder/*.service.ts' gives same.

Issue reported on Win10, Node 10.15.1, npm 6.6.0; my package.json is:

"dependencies": {
    "@angular/animations": "^7.2.1",
    "@angular/cdk": "^7.2.1",
    "@angular/common": "^7.2.1",
    "@angular/compiler": "^7.2.1",
    "@angular/core": "^7.2.1",
    "@angular/forms": "^7.2.1",
    "@angular/http": "^7.2.1",
    "@angular/platform-browser": "^7.2.1",
    "@angular/platform-browser-dynamic": "^7.2.1",
    "@angular/router": "^7.2.1",
    "@auth0/angular-jwt": "^2.1.0",
    "@nebular/auth": "^3.1.0",
    "@nebular/bootstrap": "^3.1.0",
    "@nebular/date-fns": "^3.1.0",
    "@nebular/security": "^3.1.0",
    "@nebular/theme": "^3.1.0",
    "@ng-bootstrap/ng-bootstrap": "^4.0.1",
    "@swimlane/ngx-charts": "^10.0.0",
    "@types/video.js": "^7.2.10",
    "angular-tag-cloud-module": "^3.3.0",
    "angular2-chartjs": "0.4.1",
    "chart.js": "^2.7.3",
    "classlist.js": "1.1.20150312",
    "core-js": "2.5.1",
    "date-fns": "^2.0.0-alpha.27",
    "echarts": "^4.0.2",
    "intl": "1.2.5",
    "nebular-icons": "1.1.0",
    "ng2-nouislider": "^1.7.13",
    "ngx-echarts": "^4.0.1",
    "normalize.css": "6.0.0",
    "nouislider": "^13.1.1",
    "npm": "^6.6.0",
    "pace-js": "1.0.2",
    "roboto-fontface": "0.8.0",
    "rxjs": "6.3.0",
    "rxjs-compat": "6.3.0",
    "typeface-exo": "0.0.22",
    "video.js": "^7.4.1",
    "web-animations-js": "2.2.5",
    "zone.js": "^0.8.28"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "^0.12.2",
    "@angular/cli": "^7.2.2",
    "@angular/compiler-cli": "^7.2.1",
    "@angular/language-service": "^7.2.1",
    "@compodoc/compodoc": "^1.1.7",
    "@fortawesome/fontawesome-free": "^5.2.0",
    "@ngx-translate/core": "^9.1.1",
    "@ngx-translate/http-loader": "^2.0.1",
    "@types/d3-color": "1.0.5",
    "@types/jasmine": "2.5.54",
    "@types/jasminewd2": "2.0.3",
    "@types/leaflet": "1.2.3",
    "@types/lodash": "^4.14.120",
    "@types/node": "^6.0.90",
    "bootstrap": "^4.1.3",
    "codelyzer": "^4.5.0",
    "concurrently": "^4.1.0",
    "conventional-changelog-cli": "1.3.4",
    "jasmine-core": "^3.3.0",
    "jasmine-spec-reporter": "^4.2.1",
    "jquery": "^3.3.1",
    "json-server": "^0.14.0",
    "karma": "^3.1.4",
    "karma-chrome-launcher": "^2.2.0",
    "karma-cli": "^2.0.0",
    "karma-coverage-istanbul-reporter": "^2.0.4",
    "karma-jasmine": "^2.0.1",
    "karma-jasmine-html-reporter": "^1.4.0",
    "ngx-spec": "^2.1.4",
    "node-sass": "^4.9.3",
    "npm-run-all": "4.0.2",
    "popper.js": "^1.14.6",
    "protractor": "^5.4.2",
    "rimraf": "2.6.1",
    "sass-loader": "^7.0.1",
    "stylelint": "7.13.0",
    "ts-node": "3.2.2",
    "tslint": "^5.13.1",
    "tslint-sonarts": "^1.9.0",
    "typescript": "3.1.3"
  }