Set up automatic release publishing (#266)

Summary:
On tags, build and publish artifacts to bintray. The encrypted accounted creds are for a `flipperfbbot` account on Bintray I created for this.
Pull Request resolved: https://github.com/facebook/flipper/pull/266

Reviewed By: priteshrnandgaonkar

Differential Revision: D9848181

Pulled By: passy

fbshipit-source-id: cf9150b2352a9ce972c48533ce15e8e75aa908fe

scripts/publish-android-release.sh

@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+set -e
+
+BASEDIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )/.." && pwd )"
+IS_SNAPSHOT="$(grep 'VERSION_NAME=[0-9\.]\+-SNAPSHOT' "$BASEDIR/gradle.properties" || echo "")"
+
+if [ "$ANDROID_PUBLISH_KEY" == "" ]; then
+  echo "No encryption key. Skipping snapshot deployment."
+  exit
+elif [ "$IS_SNAPSHOT" != "" ]; then
+  echo "Build appears to be a SNAPSHOT release, but this is a script for building stable releases. Skipping ..."
+  exit 1
+else
+  openssl aes-256-cbc -d -in scripts/bintray-publish-keys.enc -k "$ANDROID_PUBLISH_KEY" >> "$BASEDIR/gradle.properties"
+  "$BASEDIR"/gradlew bintrayUpload --info -PdryRun=false
+fi