fix(package): added @angular-devkit/schematics as dev dependency #69

Author: AnthonyNahas

package.json

@@ -45,7 +45,7 @@
     "@angular/material": "^7.3.6"
   },
   "devDependencies": {
-    "@angular-devkit/schematics": "^7.3.7",
+    "@angular-devkit/schematics": "^7.3.8",
     "@angular/compiler": "^7.2.11",
     "@angular/compiler-cli": "^7.2.11",
     "@angular/platform-browser": "^7.2.11",