Merge pull request #38 from exoego/sbt-cache

Update sbt to 1.3.0

Author: TATSUNO Yasuhiro

.travis.yml

@@ -39,10 +39,12 @@ install:
 before_cache:
   - rm -fv $HOME/.ivy2/.sbt.ivy.lock
   - find $HOME/.ivy2/cache -name "ivydata-*.properties" -print -delete
+  - find $HOME/.coursier   -name "*.lock"               -print -delete
   - find $HOME/.sbt        -name "*.lock"               -print -delete
 
 cache:
   directories:
     - $HOME/.ivy2/cache
+    - $HOME/.coursier
     - $HOME/.sbt/boot