Added WidgetText. Fixed some things. Updated README

Widgets/WidgetText.h

@@ -0,0 +1,71 @@
+#ifndef WIDGET_TEXT_H_
+#define WIDGET_TEXT_H_
+
+#include "Widget.h"
+#include <SDL2/SDL.h>
+
+#include <string>
+
+#include "../sdl_helpers.h"
+#include "../json.hpp"
+
+class WidgetText : public Widget
+{
+protected:
+	// Text to display
+	std::string m_text;
+
+	// Desired font file
+	// Leave empty for default
+	std::string m_font_file;
+
+	// Desired font size
+	int m_size;
+
+	// Whether to fit text inside rectangle
+	// FIT_SHRINK will try with the desired font size and shrink if needed
+	// FIT_AUTO will with the desired font size and shrink or enlarge if needed
+	// Default - FIT_NONE
+	TextFit m_fit;
+
+	// Whether to wrap to multiple lines
+	// Default - false
+	bool m_should_wrap;
+
+	// Default - center
+	HorizontalAlign m_halign;
+
+	// Default - center
+	VerticalAlign m_valign;
+
+	// Default - black
+	SDL_Color m_text_color;
+
+public:
+	WidgetText(int width, int height, std::string text,
+		TextFit fit, bool should_wrap,
+		HorizontalAlign halign, VerticalAlign valign,
+		SDL_Color text_color,
+		int size, std::string font = "");
+
+	WidgetText(int width, int height, std::string text,
+		TextFit fit, bool should_wrap,
+		int size, std::string font = "");
+
+	WidgetText(int width, int height, std::string text,
+		int size, std::string font = "");
+
+	void set_text(const std::string& text);
+	void set_font(const std::string& font_file);
+	void set_font_size(int size);
+	void set_fit(TextFit fit);
+	void set_halign(HorizontalAlign halign);
+	void set_valign(VerticalAlign valign);
+	void set_color(SDL_Color text_color);
+
+	virtual void draw() override;
+
+	static Widget* builder(const nlohmann::json& j);
+};
+
+#endif // WIDGET_TEXT_H_