Update README.md

Adding info about LineData.

README.md

@@ -56,6 +56,7 @@ Supported platforms (including but not limited to) are:
 * `Drawing.h` : Features some drawing functions such as `bresenham::plot_line()`, `drawing::draw_box()`, `drawing::draw_box_textured()`, `drawing::draw_box_outline()` and `drawing::filled_circle_positions()`.
 * `GameEngine.h` : A highly customizable buy easy to use game engine (or engine for any real-time terminal-based program).
 * `Keyboard.h` : A keyboard handling API that is easy to use. Use class `StreamKeyboard` to poll key presses. Function `readKey()` scans keypresses in an un-blocked manner and returns a struct `KeyPressDataPair` containing two objects of type `KeyPressData`; `transient` and `held`. The former being the raw key presses and the latter being the raw key presses buffered in a buffer that has a size proportional to the FPS of the application. These two modes have their pros and cons: Transient mode is more accurate but cannot capture held key presses, held mode on the other hand is great at capturing held keys but due to buffering, it suffers from minor inaccurracies.
+* `LineData` : a struct that helps to convert bigger chunks of strings / colors along a single line of text to individual "pixels" that can be "streamed" to the `ScreenHandler`.
 * `MessageHandler.h` : The `MessageHandler` class allows you to queue up messages of different severity levels and durations. Messages are displayed in a `ui::TextBox` in the middle of the screen.
 * `ParticleSystem.h` : This ASCII-style particle system allows you to make cool real-time VFX such as liquids and fire-smoke. See ([`SurgSim_Lite`](https://github.com/razterizer/SurgSim_Lite) and [`Pilot_Episode`](https://github.com/razterizer/Pilot_Episode) for examples).
 * `RC.h` : A struct representing the row and column position on the screen or in a texture or bounding box to mention a few.