Merge pull request #24 from matthewelse/master

Add GCC (make) build support
IAR - template bug fix in Assembler settings, IAR builder implementation
IAR - template - build output directory
uvision definitions - KL25Z, K64F and Nucleo boards (their MCU)
Fix typo
Merge pull request #26 from sg-/master

export - Fix typo in scrape_dir