.github/CONTRIBUTING.md
## Coding convention
### Add prefix I to interface name
example: `interface IPresenter {}`
### Not use UPPER_SNAKE_CASE
`const val` must use lowerCamelCase.
`enum class` must use UpperCalemCase.
#### if define in other Package?
use import as.
example: `import android.content.Intent.ACTION_VIEW as intentActionView`