Merge pull request #234 from omar-polo/master

fix the build on OpenBSD
diff --git a/encoder/basisu_enc.cpp b/encoder/basisu_enc.cpp
index d0c37b0..daaf65b 100644
--- a/encoder/basisu_enc.cpp
+++ b/encoder/basisu_enc.cpp
@@ -195,7 +195,7 @@
 	{
 		QueryPerformanceFrequency(reinterpret_cast<LARGE_INTEGER*>(pTicks));
 	}
-#elif defined(__APPLE__)
+#elif defined(__APPLE__) || defined(__OpenBSD__)
 #include <sys/time.h>
 	inline void query_counter(timer_ticks* pTicks)
 	{