Update README.md

README.md

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 # turbopascal-textgraf
 Textmode and Graphics Mode Lib for Turbo Pascal on DOS (Predecessor of the X-LIB Unit)
+
+## Compile
+Start compile.bat
+Uses Turbo Pascal 6.0 installed in c:\progrs\tp\
+
+## Usage
+In your pascal code with add following usage
+use textgraf
+
+## Example Graphics Mode 13
+
+case InitTextGraf of
+     1: begin end;
+end;
+GrafikMode($13);