Added new script to run all tests, removed top-level build.gradle because of issues with AS

Change-Id: I52e0f400f7995d8f45e65320fc911aed70f601ab

Author: JoseAlcerreca

Diff for: build.gradle

@@ -0,0 +1,12 @@
+ui/espresso/BasicSample
+ui/espresso/CustomMatcherSample
+ui/espresso/MultiWindowSample
+ui/espresso/DataAdapterSample
+ui/espresso/IntentsBasicSample
+ui/espresso/IntentsAdvancedSample
+ui/espresso/WebBasicSample
+ui/uiautomator/BasicSample
+runner/AndroidJunitRunnerSample
+unit/BasicSample
+unit/BasicUnitAndroidTest
+integration/ServiceTestRuleSample

Diff for: gradle/wrapper/gradle-wrapper.jar

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+set -e  # Exit immediately if a command exits with a non-zero status.
+
+for p in $(cat projects.conf); do
+   echo
+   echo
+   echo Running unit and Android tests in $p
+   echo "====================================================================="
+
+   pushd $p > /dev/null  # Silent pushd
+   ./gradlew $@ test cAT | sed "s@^@$p @"  # Prefix every line with directory
+   code=${PIPESTATUS[0]}
+   if [ "$code" -ne "0" ]; then
+       exit $code
+   fi
+   popd > /dev/null  # Silent popd
+done
+
+echo
+echo "ALL TESTS PASS"