Adding upstream version 1.1.1.

Signed-off-by: Daniel Baumann <daniel@debian.org>

README.md

@@ -0,0 +1,77 @@
+# harlequin-postgres
+
+This repo provides the Harlequin adapter for Postgres.
+
+## Installation
+
+`harlequin-postgres` depends on `harlequin`, so installing this package will also install Harlequin.
+
+### Using pip
+
+To install this adapter into an activated virtual environment:
+```bash
+pip install harlequin-postgres
+```
+
+### Using poetry
+
+```bash
+poetry add harlequin-postgres
+```
+
+### Using pipx
+
+If you do not already have Harlequin installed:
+
+```bash
+pip install harlequin-postgres
+```
+
+If you would like to add the Postgres adapter to an existing Harlequin installation:
+
+```bash
+pipx inject harlequin harlequin-postgres
+```
+
+### As an Extra
+Alternatively, you can install Harlequin with the `postgres` extra:
+
+```bash
+pip install harlequin[postgres]
+```
+
+```bash
+poetry add harlequin[postgres]
+```
+
+```bash
+pipx install harlequin[postgres]
+```
+
+## Usage and Configuration
+
+You can open Harlequin with the Postgres adapter by selecting it with the `-a` option and passing a [Posgres DSN](https://www.postgresql.org/docs/current/libpq-connect.html#LIBPQ-CONNSTRING):
+
+```bash
+harlequin -a postgres "postgres://my-user:my-pass@localhost:5432/my-database"
+```
+
+You can also pass all or parts of the connection string as separate options. The following is equivalent to the above DSN:
+
+```bash
+harlequin -a postgres -h localhost -p 5432 -U my-user --password my-pass -d my-database
+```
+
+Many more options are available; to see the full list, run:
+
+```bash
+harlequin --help
+```
+
+## Manual Transactions
+
+To use Manual transaction mode, click on the label in the Run Query Bar to toggle the transaction mode from Auto to Manual.
+
+## Further Documentation
+
+For more information, see the [Harlequin Docs](https://harlequin.sh/docs/postgres/index).