README.md

## How to run
1. Install picodata 
2. Run picodata with the following command:
```bash
picodata run --config picodata_config.yaml 
```
3. Prepare data schema for example app with:
```bash
cat before.sql | picodata admin ./admin.sock
```
4. Run example app with 
```bash
mvn compile && mvn exec:java -Dexec.mainClass="com.example.PostgresExample"
```