Add a release script.

.gitignore

@@ -3,3 +3,5 @@ bazel-*
 .project
 .idea*
 project.iml
+output
+*.swp

src/tools/build-release.sh

@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+
+set -e
+
+if [ ! -f WORKSPACE ]; then
+    echo "This must be invoked from the WORKSPACE root"
+    exit 1
+fi
+
+if [ ! $# -eq 1 ]; then
+    echo "Expected exacly one argument <version>, e.g., <0.1.0>"
+    exit 1
+fi
+
+JARNAME=java-grpc-prometheus-$1.jar
+SRCJARNAME=java-grpc-prometheus-$1-src.jar
+
+rm -rf output && mkdir output && chmod +x output
+
+echo "Running all tests..."
+bazel test src/...
+
+echo "Building jar..."
+bazel build //src/main/java/me/dinowernli/grpc/prometheus
+cp ./bazel-bin/src/main/java/me/dinowernli/grpc/prometheus/libprometheus.jar ./output/$JARNAME
+
+echo "Building srcjar..."
+bazel build src/main/java/me/dinowernli/grpc/prometheus:libprometheus-src.jar
+cp ./bazel-bin/src/main/java/me/dinowernli/grpc/prometheus/libprometheus-src.jar ./output/$SRCJARNAME
+
+echo "Generating checksums..."
+(cd output && sha1sum $JARNAME > $JARNAME.sha1 && sha1sum -c $JARNAME.sha1)
+(cd output && md5sum $JARNAME > $JARNAME.md5 && md5sum -c $JARNAME.md5)
+
+echo "Done"
+