docs: update branding, add security policy

SECURITY.md

@@ -0,0 +1,9 @@
+# Security
+
+For more information about Aragon-related security and contact information, please visit our [security policy page](https://wiki.aragon.org/association/security/).
+
+## Status
+
+aragonOS has passed a number of [independent professional security audits and rolling reviews](https://wiki.aragon.org/association/security/).
+
+There is an ongoing [bug bounty program](https://wiki.aragon.org/dev/bug_bounty/) with a bounty pool of $250,000 USD for rewarding hackers who find new security vulnerabilities. [More information](https://wiki.aragon.org/dev/bug_bounty/).

readme.md

@@ -1,16 +1,63 @@
-# aragonOS <img align="right" src="https://raw.githubusercontent.com/aragon/design/master/readme-logo.png" height="80px" /> [![Travis branch](https://img.shields.io/travis/aragon/aragonOS/master.svg?style=for-the-badge)](https://travis-ci.org/aragon/aragonOS) [![Coveralls branch](https://img.shields.io/coveralls/aragon/aragonOS/master.svg?style=for-the-badge)](https://coveralls.io/github/aragon/aragonOS?branch=master) [![npm](https://img.shields.io/npm/v/@aragon/os.svg?style=for-the-badge)](https://www.npmjs.com/package/@aragon/os)
-
-This repo contains Aragon's reference implementation of [aragonOS](https://hack.aragon.org/docs/aragonos-intro.html).
+<p align="center"><img width="50%" src=".github/assets/aragonos.svg"></p>
+
+<div align="center">
+  <!-- NPM -->
+  <a href="https://npmjs.org/package/@aragon/os">
+    <img src="https://img.shields.io/npm/v/@aragon/os.svg?style=flat-square" alt="Version" />
+  </a>
+  <!-- Security -->
+  <a href="SECURITY.md">
+    <img src="https://img.shields.io/badge/security-audited-green?style=flat-square" alt="Security" />
+  </a>
+  <!-- Coverage -->
+  <a href="https://coveralls.io/github/aragon/aragonOS?branch=master">
+    <img src="https://img.shields.io/coveralls/aragon/aragonOS/master.svg?style=flat-square" alt="Coverage" />
+  </a>
+</div>
+
+<div align="center">
+  <h4>
+    <a href="https://aragon.org">
+      Website
+    </a>
+    <span> | </span>
+    <a href="https://hack.aragon.org/docs/aragonos-intro.html">
+      Documentation
+    </a>
+    <span> | </span>
+    <a href="https://github.com/aragon/aragonOS/releases">
+      Releases
+    </a>
+    <span> | </span>
+    <a href="CONTRIBUTING.md">
+      Contributing
+    </a>
+    <span> | </span>
+    <a href="https://spectrum.chat/aragon/aragonos">
+      Support &amp; Chat
+    </a>
+  </h4>
+</div>
+
+# aragonOS
+
+Reference implementation of [aragonOS](https://hack.aragon.org/docs/aragonos-intro.html), a smart contract framework for building decentralized organizations.
 
 #### 🚨 Security review status: bug bounty
-aragonOS 4 has undergone two independent professional security reviews, and the issues raised have been resolved. However there is a [bug bounty program](https://wiki.aragon.org/dev/bug_bounty/) for rewarding hackers who find security vulnerabilities. There is a bounty pool of $250,000 USD, you can find more information [here](https://wiki.aragon.org/dev/bug_bounty/).
 
-#### 👋 Get started contributing with a [good first issue](https://github.com/aragon/aragonOS/issues?q=is%3Aissue+is%3Aopen+label%3A%22good+first+issue%22).
+aragonOS has passed a number of [independent professional security audits and rolling reviews](https://wiki.aragon.org/association/security/) and has an ongoing $250,000 USD bug bounty program.
+
+See [SECURITY.md](SECURITY.md) for more security-related information.
+
+#### 👋 Get started contributing with a [good first issue](https://github.com/aragon/aragonOS/issues?q=is%3Aissue+is%3Aopen+label%3A%22good+first+issue%22)
+
 Don't be shy to contribute even the smallest tweak. Everyone will be especially nice and helpful to beginners to help you get started!
 
 ## Documentation
 
-Visit the [Aragon Developer Portal](https://hack.aragon.org/docs/aragonos-intro.html) for in-depth documentation on the [architecture](https://hack.aragon.org/docs/aragonos-ref.html) and different parts of the system.
+Visit the [Aragon Developer Portal](https://hack.aragon.org/docs/aragonos-intro.html) for in-depth documentation.
+
+The [reference documentation](https://hack.aragon.org/docs/aragonos-ref.html) explains the various smart contract components and how to use them.
 
 ## Developing aragonOS locally
 
@@ -31,19 +78,3 @@ OWNER=[APM owner address] ENS=[ENS registry address] npx truffle exec --network
 
 - `ENS`: If no ENS registry address is provided, it will deploy a dummy ENS instance to the network. If the ENS registry is provided, the name `aragonpm.eth` must be owned by the deployer account.
 - `OWNER`: The account that will be the initial owner of the APM registry
-
-## Adding aragonOS as a dependency to your Aragon app
-
-```
-npm i --save-dev @aragon/os
-```
-
-Check the [Aragon Developer Portal](https://hack.aragon.org) for detailed documentation and tutorials on how to use aragonOS to build an Aragon app.
-
-## Contributing
-
-For more details about contributing to aragonOS, please check the [contributing guide](./CONTRIBUTING.md).
-
-## Help
-
-For help and support, feel free to contact us at any time on the [aragonOS Spectrum channel](https://spectrum.chat/aragon/aragonos).