Update README.md in more detail. (#35)
Update README.md in more detail. (#35)

This change includes the following things:
  - Travis bot badge to display latest bot status for Linux and Mac.
  - How to test.
  - Coding style and how to format source codes automatically.

ISSUE=none
hwanseung/bacardi,hwanseung/bacardi,hwanseung/bacardi,hwanseung/bacardi,hwanseung/bacardi