doc(README): Logo + Rework (#273)

Reworks the README to make it a bit more catchy, also adds our new
Logo!!

README.md

@@ -1,48 +1,72 @@
-# Grafana Tanka
+<p align="center">
+  <img
+    width="400"
+    src="https://raw.githubusercontent.com/grafana/tanka/master/docs/img/logo.svg"
+    alt="Grafana Tanka Logo"
+  />
+</p>
+
+<p align="center">
+  <a href="https://cloud.drone.io/grafana/tanka">
+    <img src="https://img.shields.io/drone/build/grafana/tanka?style=flat-square">
+  </a>
+  <a href="https://github.com/grafana/tanka/releases">
+    <img src="https://img.shields.io/github/release/grafana/tanka?style=flat-square" />
+  </a>
+  <img src="https://img.shields.io/github/contributors/grafana/tanka?style=flat-square" />
+  <a href="https://grafana.slack.com">
+    <img src="https://img.shields.io/badge/Slack-GrafanaLabs-orange?logo=slack&style=flat-square" />
+  </a>
+</p>
 
-![Tanka Banner](docs/img/banner.png)
+<p align="center">
+  <a href="https://tanka.dev">Website</a>
+  ·
+  <a href="https://tanka.dev/install">Installation</a>
+  ·
+  <a href="https://tanka.dev/tutorial/overview">Tutorial</a>
+</p>
 
-[![Build Status](https://cloud.drone.io/api/badges/grafana/tanka/status.svg)](https://cloud.drone.io/grafana/tanka)
-![Golang](https://img.shields.io/badge/language-Go-blue)
-![GitHub contributors](https://img.shields.io/github/contributors/grafana/tanka)
-![GitHub release](https://img.shields.io/github/release/grafana/tanka)
-![License](https://img.shields.io/github/license/grafana/tanka)
+# Grafana Tanka
 
-Tanka is a composable configuration utility for
-[Kubernetes](https://kubernetes.io/). It leverages the
-[Jsonnet](https://jsonnet.org) language to realize flexible, reusable and
-concise configuration.
+<img
+  src="https://raw.githubusercontent.com/grafana/tanka/logo/master/img/example.png"
+  width="50%"
+  align="right"
+/>
 
-## Highlights
+**The clean, concise and super flexible alternative to YAML for your
+[Kubernetes](https://k8s.io) cluster**
 
-- **:wrench: Flexible**: The
-  [Jsonnet data templating language](https://jsonnet.org) gives us much smarter
-  ways to express our Kubernetes configuration than YAML does.
-- **:books: Reusable**: Code can be refactored into libraries, they can be
-  imported wherever you like and even shared on GitHub!
+- **:boom: Clean**: The
+  [Jsonnet language](https://jsonnet.org) expresses your apps more obviously than YAML ever did
+- **:books: Reusable**: Build libraries, import them anytime and even share them on GitHub!
 - **:pushpin: Concise**: Using the Kubernetes library and abstraction, you will
   never see boilerplate again!
-- **:dart: Work with confidence**: `tk diff` allows to check all changes before
-  they will be applied and `tk apply` makes sure you always select the correct
-  cluster. Stop guessing and make sure it's all good.
-- **:rocket: Used in production**: While still a very young project, Tanka is
-  used internally at Grafana Labs for all of their Kubernetes configuration needs.
-- **:heart: Fully open source**: This is an open-source project. It is free as
-  in beer and as in speech and this will never change.
+- **:dart: Confidence**: Stop guessing and use `tk diff` to see what exactly will happen
+- **:rocket: Production ready**: Tanka deploys [Grafana Cloud](https://grafana.com/cloud) and many more production setups
 
-## Getting started
+<br />
+<p align="center">
+  <a href="https://tanka.dev/tutorial/overview"><strong>Let's kill some YAML together&nbsp;&nbsp;▶</strong></a>
+</p>
+
+## :rocket: Getting started
 
 To get started, [install Tanka](https://tanka.dev/install) first, and then
 [follow the tutorial](https://tanka.dev/tutorial/overview). This should get you
 on track quickly.
 
-## Additional resources
+## :book: Additional resources
 
 - https://jsonnet.org/, the official Jsonnet documentation provides lots of
   examples on how to use the language.
 - https://github.com/grafana/jsonnet-libs: Grafana Labs' Jsonnet libraries are a
   rich set of configuration examples compatible with Tanka.
 
-## License
+## :pencil: License
+
+Tanka is an open-source project :heart:. It is free as
+in beer and as in speech and this will never change.
 
-Licensed Apache 2.0, see [LICENSE](LICENSE).
+Licensed under Apache 2.0, see [LICENSE](LICENSE).