Make name key Composer 2.0 compatible (#48)
Make name key Composer 2.0 compatible (#48)

- Uppercase characters in `name` cause a deprecation warning (or error in 2.0).
- This commit coerces the developer name to lowercase within `name`.
- Plugin name is already coerced to lowercase elsewhere.
getgrav/grav-plugin-devtools,getgrav/grav-plugin-devtools