Added new sample

samples/sample.logo.txt

@@ -0,0 +1,13 @@
+10 gr:poke -16302,0
+15 i=0:x1 = 15:x2=1:x3 = 1
+20 for y=7 to 47:i=i-1 : if (i <= 0) then i=7: read c: color=c
+30 if (y < 21) then x1=x1-((21-y)/12) : goto 40
+31 x1 = x1 + x2 - 1: x2 = x2 * x3: x3 = x3 + 0.002
+40 hlin x1,39-x1 at y
+50 next y
+60 data 12,13,9,1,3,6
+70 color=0
+80 hlin 16,22 at 7: hlin 18,20 at 8: hlin 16,22 at 47: hlin 18,20 at 46
+90 vlin 14,34 at 32: vlin 15,33 at 31: vlin 16,32 at 30
+100 vlin 18,30 at 29: vlin 22, 26 at 28
+110 color = 12: for a=0 to 3:vlin a,a+4 at 22-a:next a