[travis-ci] add one of the cortex-m0 projects to the build
diff --git a/.travis.yml b/.travis.yml
index bed550c..39a9660 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,6 +10,7 @@
     - PROJECT=stm32f746g-disco-test     TOOLCHAIN=arm-eabi-5.2.0-Linux-x86_64
     - PROJECT=stm32f4-discovery-test    TOOLCHAIN=arm-eabi-5.2.0-Linux-x86_64
     - PROJECT=stellaris-launchpad-test  TOOLCHAIN=arm-eabi-5.2.0-Linux-x86_64
+    - PROJECT=nrf51-pca10028-test       TOOLCHAIN=arm-eabi-5.2.0-Linux-x86_64
     - PROJECT=qemu-microblaze-test      TOOLCHAIN=microblaze-elf-5.2.0-Linux-x86_64
     - PROJECT=qemu-mips-test            TOOLCHAIN=mips-elf-5.2.0-Linux-x86_64
     - PROJECT=pc-x86-test               TOOLCHAIN=i386-elf-5.2.0-Linux-x86_64