Added Makefile and .gitignore. Erases line on update.

Signed-off-by: 0xf8 <0xf8.dev@proton.me>

Makefile

@@ -0,0 +1,2 @@
+rbtext: rbtext.c
+	$(CC) -o $@ $<

rbtext.c

@@ -87,7 +87,7 @@ int main(int carg, char **varg) {
     }
 
     while (1) {
-        printf("\r");
+        printf("\r\e[2K");
         genColors(text);
         printf("\e[0m");
         fflush(stdout);