add template file, update readme, remove logs

src/environments/environment.template.ts

@@ -0,0 +1,10 @@
+export const environment = {
+  /**
+   * TODO add the sections from environment.common.ts you want to override here
+   * e.g.
+   * rest: {
+   *   host: 'rest.api',
+   *   nameSpace: '/rest/api',
+   * }
+   */
+};