Circle - add building tests for k64f

Author: 0xc0170

circle.yml

@@ -2,6 +2,7 @@ test:
     override:
         - cd ../testproject && mbed deploy
         - cd ../testproject && mbed compile -m K64F -t GCC_ARM -j 0 --source=. --source=mbed-os/TESTS/integration/basic
+        - cd ../testproject && mbed compile -m K64F -t GCC_ARM -j 0 --tests
         - cd ../testproject && mbed compile -m LPC1768 -t GCC_ARM -j 0 --source=. --source=mbed-os/TESTS/integration/basic
         - cd ../testproject && mbed compile -m NUCLEO_F401RE -t GCC_ARM -j 0 --source=. --source=mbed-os/TESTS/integration/basic
         - cd ../testproject && mbed compile -m NRF51822 -t GCC_ARM -j 0 --source=. --source=mbed-os/TESTS/integration/basic
@@ -18,4 +19,4 @@ dependencies:
         - sudo apt-get -y update
         - sudo apt-get -y install gcc-arm-none-eabi=4.9.3.2015q3-1precise1
     override:
-        - cd ../testproject/mbed-os && pip install -r requirements.txt
+        - cd ../testproject/mbed-os && pip install -r requirements.txt