add source code.
* use pca10001 ble_app_hrs project
* add .gitignore

Signed-off-by: Aaron Xu <overheat1984@gmail.com>
* add Lib\*
* more ingore files in .gitingore

Signed-off-by: Aaron Xu <overheat1984@gmail.com>
Merge branch 'master' of https://github.com/overheat/Wearable-Pedometer