Print commands travis scripts are running

script/travis

@@ -1,7 +1,7 @@
 #!/bin/bash
 
 # Exit on first error
-set -e
+set -ex
 
 export PYTHON_EGG_CACHE="/tmp/.python-eggs"
 

script/travis-install

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-set -e
+set -ex
 
 sudo sh -c "wget -qO- https://get.docker.io/gpg | apt-key add -"
 sudo sh -c "echo deb http://get.docker.io/ubuntu docker main > /etc/apt/sources.list.d/docker.list"