Add S3 doc, github actions releases

* Updated README with option to download OONI reports from S3
* Create GitHub action to create releases
* Add freebsd and arm releases

.github/workflows/release.yml

@@ -0,0 +1,29 @@
+name: goreleaser
+
+on:
+  push:
+
+jobs:
+  goreleaser:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v2
+      -
+        name: Unshallow
+        run: git fetch --prune --unshallow
+      -
+        name: Set up Go
+        uses: actions/setup-go@v1
+        with:
+          go-version: 1.14.x
+      -
+        name: Run GoReleaser
+        uses: goreleaser/goreleaser-action@v1
+        if: startsWith(github.ref, 'refs/tags/')
+        with:
+          version: latest
+          args: release --rm-dist
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.goreleaser.yml

@@ -4,13 +4,10 @@ builds:
     binary: ooni-sync
     goos:
       - windows
+      - freebsd
       - darwin
       - linux
     goarch:
       - amd64
-release:
-  github:
-    owner: thetorproject
-    name: ooni-sync
-archive:
-  format: tar.gz
+      - arm64
+      - arm

README

@@ -1,3 +1,7 @@
+ooni-sync now supports downloading OONI reports from the AWS S3 bucket
+[ooni-data](https://registry.opendata.aws/ooni/). Please use the option
+`-s3-direct` to download OONI reports from the AWS S3 bucket.
+
 ATTENTION: OONI now offers a full database to quicky access all the data 
 and the use of the OONI Sync tool is no longer recommended. For all the 
 options available to access OONI data see: https://ooni.org/data/.
@@ -8,7 +12,7 @@ that are not already present locally. You can run it again and again to
 keep a local directory up to date with newly published reports.
 
 Example usage:
-	ooni-sync -xz -directory reports test_name=tcp_connect
+	ooni-sync -s3-direct -xz -directory reports test_name=tcp_connect
 This command will create the directory "reports" if it doesn't exist,
 download all tcp_connect reports that are not already present in the
 directory, and compress the downloaded reports with xz.