added rebuild & contribution instruction to README.md

README.md

@@ -1,2 +1,11 @@
-# local-backup-server
-Nodejs server for local backups of the memex browser extension.
+Nodejs server for local backups of the memex browser extension.
+
+## installation
+Get the newest [release](https://github.com/WorldBrain/local-backup-server/releases) for your platform.
+
+## rebuild & contribution
+1. clone master to your local drive
+2. make sure [node.js](https://nodejs.org/en/) 9 is installed on your machine
+3. install the dependencies by running `npm install`
+4. get the [nw.js binary](https://nwjs.io)
+5. run the project by running `/path/to/nwjs-binary .` from the projects folder