#3: Add missing sudo command

Author: adielcristo

Diff for: bin/travis.sh

@@ -25,6 +25,6 @@ yarn add gulp -D
 # Install php
 sudo add-apt-repository -y ppa:ondrej/php
 sudo apt-get update
-apt-get install -y php7.0 php7.0-cli
+sudo apt-get install -y php7.0 php7.0-cli
 
 exit 0;