slightly modify instructions

class/4-maps-deployment.ipynb

@@ -96,9 +96,9 @@
     "pandas\n",
     "gunicorn\n",
     "altair\n",
-    "dash==1.18.1\n",
+    "dash\n",
     "dash_bootstrap_components\n",
-    "plotly==4.14.3\n",
+    "plotly\n",
     "```\n",
     "\n",
     "## gunicorn\n",
@@ -107,7 +107,6 @@
     "`gunicorn` is a HTTP server specifically for Python web applications which runs natively in Unix.\n",
     "You also need to create a `Procfile` which tells Heroku\n",
     "where your main app file is located and that you want to use `gunicorn` to run it.\n",
-    "This line will work if it is in `src/app.py`:\n",
     "\n",
     "```\n",
     "web: gunicorn app:server\n",
@@ -135,10 +134,12 @@
     "\n",
     "\n",
     "```bash\n",
-    "heroku create my-dash-app # change my-dash-app to a unique name\n",
+    "git init # this will initialize your folder as a local git repo\n",
     "git add . # add the files you need to git\n",
     "git commit -m 'Initial app boilerplate'\n",
-    "git push heroku master # deploy code to the heroku repos master branch\n",
+    "heroku create my-dash-app # change my-dash-app to a unique name\n",
+    "git remote -v # check to make sure `heroku` is set as the remote\n",
+    "git push heroku main # deploy code to the heroku repos main branch\n",
     "```\n",
     "\n",
     "If you are prompted to login when pushing, \n",
@@ -3833,7 +3834,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.7"
+   "version": "3.10.2"
   },
   "nteract": {
    "version": "0.28.0"