travis: add support for deploying from Travis CI

.travis.yml

@@ -1,5 +1,15 @@
 language: java
 jdk:
 - oraclejdk8
+cache:
+  directories:
+  - "$HOME/.m2"
+install: true
+script: "./mvnw clean install"
 after_success:
-  - mvn --projects builder clean test jacoco:report coveralls:report
+- "./travis-coveralls-report.sh"
+- '[[ $TRAVIS_BRANCH == "master" ]] && ./travis-deploy.sh'
+env:
+  global:
+  - secure: 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
+  - secure: Qc9fW1ygWNArfhIEa5zhvWj+vmqb5MWbeQwsskl7bFOM2eARjGBAY9Ns8IpT3rL0DZLrGuM4WswgVggiFvx0PJuakW59fPq8Iu+p64k8kyOl1+0qoBS1BIOXRNnoSsas6Wcr5YnsNp/N8Nn09LT/oDfxowV8nsxAePGDT/ypfghCvPnwFbdw2gAkBgqeNBqm5h/8LReJ7TMckUWUlYWm+og1V/EVugWEBfo6mfwpZqHax00mniLNaGCJrBK25f9Wr5A6FPcsNdcGdO3AhCPp1ISIbwmY+FK/JjtZMFU2dow3gBbgJC9adDXi8oaDeKrJ5DqHlW47X4Q6zQwqBDpdTWSLwEukfhziIHPXpEc34bZ+omtDi4d/xe/PrHjOKt7+XwW6VSrdXyBZ9atlr/SvNZlB1iA6IOMNB86CYwTi5Pzbl+s82YpzjnT/34BhYp7ag6cZ9BL3h+lKLSATroSDiTyfj7tGb6Kp1nqO43zWt+ad4nVTs+TFIN5f/dAChjhLunpeor9FD076AYfN8tI66ykZADQ+M86zlo8eee9/3Y68kjQRKooaOjNkrYUsg+Qmta0h9UU2XIRZx5O9Oaa0qpscglO2EeUb3q2YHsVbql1h3kpq9et7U06mWn8V/XZZpdONL67D6WSTX/5S2+l6SZ5o6x5tYN7Wbluu7rccwSc=

travis-coveralls-report.sh

@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+
+./mvnw --projects builder,plugin test jacoco:report coveralls:report

travis-deploy.sh

@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+
+./mvnw --projects plugin,ruleset --settings travis-settings.xml -Dskip-Tests=true -P release -B deploy

travis-settings.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0">
+    <servers>
+        <server>
+            <id>sonatype-nexus-snapshots</id>
+            <username>${env.CI_DEPLOY_USERNAME}</username>
+            <password>${env.CI_DEPLOY_PASSWORD}</password>
+        </server>
+        <server>
+            <id>sonatype-nexus-staging</id>
+            <username>${env.CI_DEPLOY_USERNAME}</username>
+            <password>${env.CI_DEPLOY_PASSWORD}</password>
+        </server>
+    </servers>
+</settings>