Use Angular CLI instead of ngm for building

Some commands:

npm run build      - to build the library.  Output is in dist/ng2-file-upload/.
npm run test       - to run tests.  Coverage report is in coverage/ as before.
npm run demo.serve - to build demo application and serve it through browsersync
npm run start      - to run demo application using `ng serve`.  Requires the library to be built and linked first.

angular.json

@@ -4,6 +4,20 @@
   "newProjectRoot": "projects",
   "projects": {
     "ng2-file-upload": {
+      "root": ".",
+      "sourceRoot": "src",
+      "projectType": "library",
+      "architect": {
+        "build": {
+          "builder": "@angular-devkit/build-ng-packagr:build",
+          "options": {
+            "tsConfig": "src/tsconfig.json",
+            "project": "src/ng-package.json"
+          }
+        }
+      }
+    },
+    "ng2-file-upload-demo": {
       "root": "demo",
       "sourceRoot": "demo/src",
       "projectType": "application",
@@ -44,38 +58,48 @@
         "serve": {
           "builder": "@angular-devkit/build-angular:dev-server",
           "options": {
-            "browserTarget": "ng2-file-upload:build"
+            "browserTarget": "ng2-file-upload-demo:build"
           },
           "configurations": {
             "production": {
-              "browserTarget": "ng2-file-upload:build:production"
+              "browserTarget": "ng2-file-upload-demo:build:production"
             }
           }
-        },
+        }
+      }
+    },
+    "ng2-file-upload-test": {
+      "root": ".",
+      "sourceRoot": "test",
+      "projectType": "library",
+      "architect": {
         "test": {
           "builder": "@angular-devkit/build-angular:karma",
           "options": {
-            "main": "demo/src/../../scripts/test.ts",
-            "karmaConfig": "karma.conf.js",
+            "main": "test/test.ts",
+            "karmaConfig": "test/karma.conf.js",
             "scripts": [],
             "styles": [],
-            "tsConfig": "demo/src/tsconfig.json",
-            "assets": [
-              "demo/src/assets"
-            ]
+            "tsConfig": "test/tsconfig.json"
           }
         },
         "lint": {
           "builder": "@angular-devkit/build-angular:tslint",
           "options": {
-            "tsConfig": [],
-            "exclude": []
+            "tsConfig": [
+              "src/tsconfig.json",
+              "demo/src/tsconfig.json",
+              "test/tsconfig.json"
+            ],
+            "exclude": [
+              "**/node_modules/**"
+            ]
           }
         }
       }
     }
   },
-  "defaultProject": "ng2-file-upload",
+  "defaultProject": "ng2-file-upload-demo",
   "schematics": {
     "@schematics/angular:component": {
       "prefix": "",