add gitattributes

.gitattributes

@@ -0,0 +1,20 @@
+*.lsl binary
+*.dat binary
+*.bmp binary
+*.BMP binary
+*.gif binary
+*.ico binary
+*.j2c binary
+*.j2k binary
+*.jpg binary
+*.png binary
+*.tga binary
+*.tif binary
+*.db2 binary
+*.llm binary
+*.nib binary
+*.rtf binary
+*.ttf binary
+*.ogg binary
+*.dll binary
+*.exe binary