Fixed .travis.yaml

Author: Mohammad Azim Khan

.travis.yml

@@ -3,11 +3,11 @@ python:
 
 script:
 # Tells mbed-cli that the current directory is a project even though you didnt do an `mbed import` (helps suppress some warning messages)
-mbed config root .
+- mbed config root .
 # Pull in mbed-os and other dependencies
-mbed deploy
-mbed compile --clean -m K64F -t GCC_ARM
-mbed compile --clean -m K64F -t GCC_ARM --profile debug
+- mbed deploy
+- mbed compile --clean -m K64F -t GCC_ARM
+- mbed compile --clean -m K64F -t GCC_ARM --profile debug
 
 before_install:
 - sudo add-apt-repository -y ppa:terry.guo/gcc-arm-embedded