add .gitignore and travis.yml

.gitignore

+.metadata/
+build/
+target/
+.DS_Store
+.classpath
+.idea
+.project
+.settings
+openblocks.iml
+bin/
+.settings/
+*~
+src/main/resources/com/ardublock/block/ardublock.zip
+deploy.sh
+<<<<<<< HEAD
+=======
+test-output
+src/main/resources/com/ardublock/block/littlebits/files
+>>>>>>> upstream/master

.travis.yml

+language: java
+  - openjdk7
+  - openjdk6
+  - oraclejdk7
+  - oraclejdk6
+before_install: ./install_openblocks
+install: mvn validate && mvn install