Updated to sbt 0.13.13 and improved travis script.

Author: manub

.travis.yml

@@ -1,7 +1,24 @@
 language: scala
+
 jdk: 
   - oraclejdk8
 
 scala:
   - 2.10.6
   - 2.11.8
+
+sudo: false
+
+cache:
+  directories:
+    - $HOME/.ivy2/cache
+    - $HOME/.sbt/boot/
+
+before_cache:
+  # Tricks to avoid unnecessary cache updates
+  - find $HOME/.ivy2 -name "ivydata-*.properties" -delete
+  - find $HOME/.sbt -name "*.lock" -delete
+
+script: 
+  - sbt ++$TRAVIS_SCALA_VERSION embeddedKafka/test kafkaStreams/test
+

project/build.properties

@@ -1 +1 @@
-sbt.version = 0.13.11
+sbt.version=0.13.13