* add option to specify album in saveToCameraRoll and move the optional type param to options
* check platform before setting default value for group types to prevent exception
* adjust typings
* update invariant message
* format code
* extract new implementation to function to avoid breaking change
* format code
* add missing spaces
* fix(lib): add accidentally removed savedphotos back to the enum to prevent crash
* chore(lib): formatting
* chore(lib): add doc for the new save method