Roll Observatory packages and add a roll script

packages/quiver/tool/travis.sh

+#!/bin/bash
+
+# Copyright (c) 2015, Google Inc. Please see the AUTHORS file for details.
+# All rights reserved. Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
+# Fast fail the script on failures.
+set -e
+
+# Verify that the libraries are error and warning-free.
+echo "Running dartanalyzer..."
+libs=$(find lib -maxdepth 1 -type f -name '*.dart')
+testing_libs=$(find lib/testing -maxdepth 1 -type f -name '*.dart')
+dartanalyzer $DARTANALYZER_FLAGS $libs $testing_libs test/all_tests.dart
+
+# Run the tests.
+echo "Running tests..."
+pub run test:test
+
+# Gather and send coverage data.
+if [ "$REPO_TOKEN" ] && [ "$TRAVIS_DART_VERSION" = "stable" ]; then
+  echo "Collecting coverage..."
+  pub global activate dart_coveralls
+  pub global run dart_coveralls report \
+    --token $REPO_TOKEN \
+    --retry 2 \
+    --exclude-test-files \
+    test/all_tests.dart
+fi