Stable: Added missing ARCH_BLE target info for tinyble-gcc target

Changes:

• Added ARCH_BLE target from seeed, see #77. Thanks @jacobrosenthal !
  • Added support for -combined.hex binary name sufix convention for tinyble-gcc target.
  • Note: In the future target info of this kind should be moved to target.json (outside Greentea).
• README.md polishing, see #76. Thanks @mlnx !

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Released in pip:

Submitting dist\mbed-greentea-0.1.18.zip to https://pypi.python.org/pypi
Server response (200): OK