Updated README

README.md

@@ -1,5 +1,4 @@
 # Cloud SQL Connector for Python Drivers
---------------------------------------------
 *Warning*: This project is experimental, and is not an officially supported Google product.
 
 The Cloud SQL Python Connector library is a library for MySQL/Postgres Python
@@ -18,3 +17,43 @@ To activate credentials locally, use the following `gcloud` command:
 gcloud auth application-default login
 ```
 
+### Setup for development
+
+Tests can be run with `nox`. Change directory into the `cloud-sql-python-connector` and just run `nox` to run the tests.
+
+1. Create a MySQL instance on Google Cloud SQL. Make sure to note your root password when creating the MySQL instance. 
+2. When the MySQL instance has finished creating, go to the overview page and set the instance’s connection string to the environment variable INSTANCE_CONNECTION_NAME using the following command:
+```
+export INSTANCE_CONNECTION_NAME=your:connection:string
+```
+3. Enable SSL for your Cloud SQL instance by following [these instructions](https://cloud.google.com/sql/docs/mysql/configure-ssl-instance).
+4. Create a service account with Cloud SQL Admin and Cloud SQL Client roles, then download the key and save it in a safe location. Set the path to the json file to the environment variable GOOGLE_APPLICATION_CREDENTIALS using the following command:
+```
+export GOOGLE_APPLICATION_CREDENTIALS=/path/to/auth/./json
+```
+5. Enable the SQL Admin API.
+6. Clone the [repository](https://github.com/GoogleCloudPlatform/cloud-sql-python-connector) and checkout the connect branch.
+7. Create a virtual environment and activate it by running the following commands:
+```
+python3.7 -m venv env
+source env/bin/activate
+```
+8. Install the dependencies using the following command:
+```
+python3.7 -m pip install -r requirements.txt
+```
+9. To use the connector: import the connector by including the following statement at the top of your Python file:
+```Python
+from google.cloud.sql.connector import connector
+```
+10. Use the connector to create a connection object by calling the connect method. Input your connection string as the first positional argument and “mysql-connector” for the second positional argument. Insert the rest of your connection keyword arguments like user, password and database.
+```
+connector.connect(
+    "your:connection:string:", 
+    "mysql-connector",
+    user="root",
+    password="shhh",
+    db="your-db-name"
+... insert other kwargs ...
+)
+```