Simplify .gitignore.

Signed-off-by: Mior Muhammad Zaki <crynobone@gmail.com>
Change file permission.

Signed-off-by: Mior Muhammad Zaki <crynobone@gmail.com>
Remove used code.

Signed-off-by: Mior Muhammad Zaki <crynobone@gmail.com>
Merge branch '2.0'