add 2nd link to README.md

Author: brent-insko-intel

README.md

@@ -26,13 +26,13 @@ src/loader            OpenXR loader code
 src/tests/            various test code (if looking for sample code start with hello_xr/)
 ```
 
-Currently the best sample code is in src/tests/hello_xr/.  More will be added in the future.  
+Currently the best sample code is in [src/tests/hello_xr/](https://github.com/KhronosGroup/OpenXR-SDK/tree/master/src/tests/hello_xr).  More will be added in the future.  
 
 This structure is for the provisional specification.  Things are 
 incomplete at launch but will be added to going forward.
 
 
 ## Building
 
-See [BUILDING.md](https://github.com/KhronosGroup/OpenXR-SDK/BUILDING.md)
+See [BUILDING.md](https://github.com/KhronosGroup/OpenXR-SDK/blob/master/BUILDING.md)