Add documentation

Author: matteosuppo

README.md

@@ -70,6 +70,34 @@ daemon.downloading.subscribe(download => {
 
 ```
 
+## Version 2
+
+Version 2 of the arduino-create-agent aims to provide a cleaner api based on promises. 
+It will remain confined to a v2 property on the daemon object until it will be stable.
+At the moment it only supports tool management.
+
+```js
+daemon.agentV2Found.subscribe(daemonV2 => {
+  if (!daemonV2) {
+    // Your Agent doesn't support v2
+  }
+  // Your Agent supports v2
+});
+
+daemon.v2.installedTools()
+  .then(tools => console.debug(tools)) // [{"name":"avrdude","version":"6.3.0-arduino9","packager":"arduino"}]
+
+let payload = {
+  name: 'avrdude',
+  version: '6.3.0-arduino9',
+  packager: 'arduino',
+  url: 'http://downloads.arduino.cc/tools/avrdude-6.3.0-arduino9-i686-w64-mingw32.zip',
+  checksum: 'SHA-256:f3c5cfa8d0b3b0caee81c5b35fb6acff89c342ef609bf4266734c6266a256d4f',
+  signature: '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'
+}
+daemon.v2.installTool(payload) // Will install the tool in the system
+```
+
 ## Development and test features
 Just run `npm run dev` and open your browser on http://localhost:8000