Recognize .otf as .ttf files (the library supports them.)

tools/encoder/src/EncoderArguments.cpp

@@ -387,6 +387,10 @@ EncoderArguments::FileFormat EncoderArguments::getFileFormat() const
     {
         return FILEFORMAT_TTF;
     }
+    if (ext.compare("otf") == 0)
+    {
+        return FILEFORMAT_TTF;
+    }
     if (ext.compare("gpb") == 0)
     {
         return FILEFORMAT_GPB;

tools/encoder/src/EncoderArguments.h

@@ -21,6 +21,7 @@ public:
         FILEFORMAT_FBX,
         FILEFORMAT_TMX,
         FILEFORMAT_TTF,
+        FILEFORMAT_OTF,
         FILEFORMAT_GPB,
         FILEFORMAT_PNG,
         FILEFORMAT_RAW

tools/encoder/src/main.cpp

@@ -114,6 +114,7 @@ int main(int argc, const char** argv)
             break;
         }
     case EncoderArguments::FILEFORMAT_TTF:
+    case EncoderArguments::FILEFORMAT_OTF:
         {
             std::vector<unsigned int> fontSizes = arguments.getFontSizes();