refactor(ScreenRobot): Extract AwtRobot code into ScreenRobotAwt.
refactor(ScreenRobot): Rename to AwtRobotAdapter.
style(ScreenRobot): Move methods and rename variables.
feature(ScreenRobot): Implement JavafxRobotAdapter.
chore(ScreenRobot): Add missing license headers.
feat(ScreenRobot): Implement timerWaitForIdle().
feat(ScreenRobot): Implement GlassRobotAdapter.
Merge pull request #146 from hastebrot/improve-screen-robot

improve(ScreenRobot): Implement adapters for Awt, Glass and JavaFX robots.