Fix travis file

Author: mmolimar

.travis.yml

@@ -1,8 +1,5 @@
 before_install:
-  - git clone https://github.com/confluentinc/ksql.git &&
-  cd ksql &&
-  git checkout 0.1.x &&
-  mvn -pl '!ksql-cli' clean install -Dmaven.test.skip=true
+  - git clone https://github.com/confluentinc/ksql.git && cd ksql && git checkout 0.1.x && mvn -pl '!ksql-cli' clean install -Dmaven.test.skip=true
 script:
   - sbt clean coverage test coverageReport && sbt coverageAggregate
 after_success: