updated messaging and img to make sure users let env complete when using ppm

Author: jyaistMap

guide/01-getting-started/install-and-set-up.ipynb

@@ -167,6 +167,8 @@
     " * Type a name for the new environment and click `Save`\n",
     " \n",
     "   ![python packagemanager new](../../static/img/ppm_mng_env_new.png)\n",
+    " * **Allow blue progress bar at the bottom of the dialog to complete.** Proceeding before this completes could result in an incomplete environment that may not perform properly.\n",
+    "   ![python package manager progress bar](../../static/img/ppm_env_create_progress.png)\n",
     "   \n",
     " * Select the Active radio button to make the new enviroment active\n",
     " \n",