Merge pull request #195 from cmdrf/fontconvert-include-truetype-driver-h

Include FT_TRUETYPE_DRIVER_H in fontconvert.c

Author: ladyada

fontconvert/fontconvert.c

@@ -23,6 +23,7 @@ See notes at end for glyph nomenclature & other tidbits.
 #include <stdint.h>
 #include <ft2build.h>
 #include FT_GLYPH_H
+#include FT_TRUETYPE_DRIVER_H
 #include "../gfxfont.h" // Adafruit_GFX font structures
 
 #define DPI 141 // Approximate res. of Adafruit 2.8" TFT