Merge pull request #1623 from haukepetersen/add_board_yunjia

boards/pca10000/include/periph_conf.h

boards/pca10005/include/periph_conf.h

boards/yunjia-nrf51822/Makefile

boards/yunjia-nrf51822/Makefile.include

boards/yunjia-nrf51822/board.c

boards/yunjia-nrf51822/dist/debug

boards/yunjia-nrf51822/dist/debug-server.sh

boards/yunjia-nrf51822/dist/debug.sh

boards/yunjia-nrf51822/dist/flash.sh

boards/yunjia-nrf51822/dist/gdb.cfg

boards/yunjia-nrf51822/dist/openocd.cfg

boards/yunjia-nrf51822/dist/reset.sh

boards/yunjia-nrf51822/include/board.h

boards/yunjia-nrf51822/include/periph_conf.h

cpu/nrf51822/include/cpu-conf.h

cpu/nrf51822/nrf51822qfaa_linkerscript.ld

cpu/nrf51822/periph/timer.c

cpu/nrf51822/periph/uart.c

cpu/nrf51822/startup.c

examples/ccn-lite-client/Makefile