Added .travis.yml configuration

Added shields to README.md

Author: khmarbaise

.travis.yml

@@ -0,0 +1,22 @@
+language: java
+jdk:
+  - openjdk6
+  - oraclejdk7
+  - oraclejdk8
+
+# No need for preliminary install step.
+install: true
+#
+# Run all integration tests.
+script: 
+  - "mvn --show-version --errors --batch-mode clean verify"
+#
+cache:
+    directories:
+    - $HOME/.m2
+branches:
+    except:
+        - gh-pages
+notifications:
+    email:
+        - [email protected]

README.md

@@ -1,4 +1,8 @@
 Plexus-archiver
 ===============
 
+[![Apache License, Version 2.0, January 2004](https://img.shields.io/github/license/codehaus-plexus/plexus-archiver.svg?label=License)](http://www.apache.org/licenses/)
+[![Maven Central](https://img.shields.io/maven-central/v/org.codehaus.plexus/plexus-archiver.svg?label=Maven%20Central)](http://search.maven.org/#search%7Cga%7C1%7Cg%3A%22org.codehaus.plexus%22%20a%3A%22plexus-archiver%22)
+[![Build Status](https://travis-ci.org/codehaus-plexus/plexus-archiver.svg?branch=master)](https://travis-ci.org/codehaus-plexus/plexus-archiver)
+
 The current master is now at https://github.com/codehaus-plexus/plexus-archiver