adding travis and gradle wrapper

Author: robertroeser

gradle/buildViaTravis.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+# This script will build the project.
+
+if [ "$TRAVIS_PULL_REQUEST" != "false" ]; then
+  echo -e "Build Pull Request #$TRAVIS_PULL_REQUEST => Branch [$TRAVIS_BRANCH]"
+  ./gradlew -Prelease.useLastTag=true build
+elif [ "$TRAVIS_PULL_REQUEST" == "false" ] && [ "$TRAVIS_TAG" == "" ]; then
+  echo -e 'Build Branch with Snapshot => Branch ['$TRAVIS_BRANCH']'
+  ./gradlew -Prelease.travisci=true -PbintrayUser="${bintrayUser}" -PbintrayKey="${bintrayKey}" -PsonatypeUsername="${sonatypeUsername}" -PsonatypePassword="${sonatypePassword}" build snapshot --stacktrace
+elif [ "$TRAVIS_PULL_REQUEST" == "false" ] && [ "$TRAVIS_TAG" != "" ]; then
+  echo -e 'Build Branch for Release => Branch ['$TRAVIS_BRANCH']  Tag ['$TRAVIS_TAG']'
+  ./gradlew -Prelease.travisci=true -Prelease.useLastTag=true -PbintrayUser="${bintrayUser}" -PbintrayKey="${bintrayKey}" -PsonatypeUsername="${sonatypeUsername}" -PsonatypePassword="${sonatypePassword}" final --stacktrace
+else
+  echo -e 'WARN: Should not be here => Branch ['$TRAVIS_BRANCH']  Tag ['$TRAVIS_TAG']  Pull Request ['$TRAVIS_PULL_REQUEST']'
+  ./gradlew -Prelease.useLastTag=true build
+fi

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#Thu Jul 23 15:18:42 PDT 2015
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-2.2.1-all.zip