Add travis snapshot deployment

.travis.settings.xml

@@ -0,0 +1,12 @@
+<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
+  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0
+                      http://maven.apache.org/xsd/settings-1.0.0.xsd">
+  <servers>
+    <server>
+      <id>sonatype-nexus-snapshots</id>
+      <username>${env.CI_DEPLOY_USERNAME}</username>
+      <password>${env.SONATYPE_PWD}</password>
+    </server>
+  </servers>
+</settings>

.travis.yml

@@ -16,5 +16,15 @@ before_install: |
   mv travis-wait-enhanced $HOME/bin
   fi
 
+
 install: /bin/true
-script: travis-wait-enhanced --timeout=60m --interval=4m -- mvn -V clean org.apache.maven.plugins:maven-source-plugin:jar-no-fork install -Prun-its
+
+jobs:
+  include:
+  - name: deploy
+    if: branch = master AND type = push
+    script: "cp .travis.settings.xml $HOME/.m2/settings.xml && travis-wait-enhanced --timeout=60m --interval=4m -- mvn -V clean org.apache.maven.plugins:maven-source-plugin:jar-no-fork deploy"
+
+  - name: pr
+    if: type = pull_request
+    script: "travis-wait-enhanced --timeout=60m --interval=4m -- mvn -V clean org.apache.maven.plugins:maven-source-plugin:jar-no-fork install -Prun-its"