Add basic readme

Readme.md

@@ -0,0 +1,21 @@
+# gooni
+
+An attempt at writing OONI Probe in golang.
+
+This is heavy work in progress.
+
+## Development setup
+
+This project uses `dep` with the `vendor/` dir in `.gitignore`.
+
+Once you have `dep` installed, run:
+
+```
+dep ensure
+```
+
+You should then be able to build a ooni binary by running:
+
+```
+make build
+```