Fix docker image name

Fixes #20

.gitignore

@@ -1,3 +1,4 @@
 config.yaml
 config.yml
 sql_exporter
+*.tar.gz

README.md

@@ -1,6 +1,6 @@
 # Prometheus SQL Exporter [![Build Status](https://travis-ci.org/justwatchcom/sql_exporter.svg?branch=master)](https://travis-ci.org/justwatchcom/sql_exporter)
 
-[![Docker Pulls](https://img.shields.io/docker/pulls/justwatch/sql_exporter.svg?maxAge=604800)](https://hub.docker.com/r/justwatchcom/sql_exporter)
+[![Docker Pulls](https://img.shields.io/docker/pulls/justwatch/sql_exporter.svg?maxAge=604800)](https://hub.docker.com/r/justwatch/sql_exporter)
 [![Go Report Card](https://goreportcard.com/badge/github.com/justwatchcom/sql_exporter)](https://goreportcard.com/report/github.com/justwatchcom/sql_exporter)
 
 This repository contains an service that runs user-defined SQL queries at flexible intervals and exports the resulting metrics via HTTP for Prometheus consumption.
@@ -29,7 +29,7 @@ cp config.yml.dist config.yml
 Running in Docker:
 
 ```
-docker run -v `pwd`/config.yml:/config/config.yml -e CONFIG=/config/config.yml -d -p 9237:9237 --name sql_exporter justwatchcom/sql_exporter
+docker run -v `pwd`/config.yml:/config/config.yml -e CONFIG=/config/config.yml -d -p 9237:9237 --name sql_exporter justwatch/sql_exporter
 ```
 
 Manual `scrape_configs` snippet: