Added I2C driver and sensor drivers (ADXL346, MAX44009, SHT21) for the OpenMote-CC2538 platform.
Merge branch 'develop' of https://github.com/OpenMote/openwsn-fw into develop
Updated the I2C driver and the ADXL346 and MAX44009 drivers.
Modified .gitignore file to avoid committing temporary files.
Renamed openmote into cc2538. This will need to change again once we update the naming convention for chips and platforms.
Moved the I2C and SPI drivers under the board directory. Updated the header of the I2C driver.
Updated the I2C driver for the CC2538 platform.
FW-282. Fix.
FW-283. Fix.
Merge pull request #108 from openwsn-berkeley/develop_FW-282

FW-282. Fix.
Merge pull request #109 from openwsn-berkeley/develop_FW-283

FW-283. Fix.
FW-284. Removing old FreeRTOS.
FW-284. Fix.
Merge pull request #110 from openwsn-berkeley/develop_FW-284

FW-284. Fix.
FW-285. Cleaning up scheduler.h.
FW-285. Moving interrupt declarations around.
FW-285. Moving schedule.h in generic kernel/ folder.
FW-285. Dummy compilation of FreeRTOS.
FW-285. Have Travis build a FreeRTOS-based project.
FW-285. Fixing standalone IAR projects after moving scheduler.h.