MySQL notes added.

README.md

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+# Notes On Python/Flask
+Ideas around python/flask labs and lectures:
+* Use the [flask - microblog](https://github.com/pallets/flask) as a simple example.
+* python 3 required. flask
+* docker with mysql [Docker For Mac Mysql Setup](https://dzone.com/articles/docker-for-mac-mysql-setup)
+
+
+### Docker
+
+once installed, and the mysql is running:
+```sql
+$ docker exec -it mysql bash
+
+bash-4.2# mysql -uroot -ppassword
+mysql: [Warning] Using a password on the command line interface can be insecure.
+Welcome to the MySQL monitor.  Commands end with ; or \g.
+Your MySQL connection id is 46
+Server version: 5.7.21 MySQL Community Server (GPL)
+
+Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
+
+Oracle is a registered trademark of Oracle Corporation and/or its
+affiliates. Other names may be trademarks of their respective
+owners.
+
+Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
+
+mysql> CREATE USER 'yourusername'@'%' IDENTIFIED BY 'yourfavoritepassword';
+Query OK, 0 rows affected (0.00 sec)
+
+mysql> GRANT ALL PRIVILEGES ON * . * TO 'yourusername'@'%';
+Query OK, 0 rows affected (0.00 sec)
+
+mysql> quit
+Bye
+bash-4.2# exit
+exit
+```
+
+Now you can use `yourusername` with a a password of `yourfavoritepassword` in the MySQLWorkbench to view, change and edit your database(s). The MySQL is at localhost:3306