README.md update

README.md

@@ -1,10 +1,12 @@
 # bfCL
-OpenCL! fancy!
+This is an experimental port of [TWLbf](https://github.com/Jimmy-Z/TWLbf) to OpenCL.
 
-Only tested with mingw-w64-x86_64/MSYS2 and Intel OpenCL SDK,
-should work with MSVC(not too old) and POSIX with other OpenCL SDK.
+### Compile
+Only tested with [mingw-w64-x86_64](https://mingw-w64.org/)
+/[MSYS2](http://www.msys2.org/)
+(and occasionally Visual Studio 2017 Community) and Intel OpenCL SDK.
 
 ### License
 Used code from [mbed TLS](https://github.com/ARMmbed/mbedtls/) which is Apache 2.0 license,
 so I guess this project becomes Apache 2.0 licensed automatically?
-or only the related file are Apache 2.0? I'm not sure.
+or only related files are Apache 2.0? I'm not sure.