Add documentation.

Author: JASchilz

README.md

@@ -0,0 +1,22 @@
+# Flask Calculator 
+
+## To Run
+
+All commands to be run from inside the repository directory.
+```
+$ pip install -r requirements.txt
+$ python setup.py
+$ python main.py
+```
+
+## To Publish to Heroku
+
+All commands to be run from inside the repository directory.
+```
+$ git init                # Only necessary if this is not already a git repository
+$ heroku create
+$ git push heroku master  # If you have any changes or files to add, commit them before you push. 
+$ heroku addons:create heroku-postgresql:hobby-dev
+$ heroku run python setup.py
+$ heroku open
+```