Variou details:

- Put the MIT copyright at the end.
- Move the directory /other -> tools
- Various improvements.

include/ftxui/screen/color.hpp

@@ -1,7 +1,3 @@
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.
-
 #ifndef FTXUI_SCREEN_COLOR
 #define FTXUI_SCREEN_COLOR
 
@@ -44,3 +40,7 @@ enum class Color : uint8_t {
 }  // namespace ftxui
 
 #endif /* end of include guard: FTXUI_COLOR_H_ */
+
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.