Travis fixes.

Author: Michael Koval

.travis.yml

@@ -3,7 +3,8 @@ dist: trusty
 services:
 - docker
 install:
-- git clone https://github.com/personalrobotics/pr-cleanroom.git .
+- git clone https://github.com/personalrobotics/pr-cleanroom.git
+- cd pr-cleanroom
 - wget https://raw.githubusercontent.com/personalrobotics/pr-rosinstalls/feature/rosdistro/repositories.yml
 script:
 - ./run-distro.sh repositories.yml --repository=prpy