Known supported compilers in README file

README.md

@@ -16,6 +16,10 @@ If you are using Ubuntu, the required packages names will be `libboost-dev`, `li
 
 ## Build
 
+The build has been tested on the following compilers:
+* Clang 3.5 to 3.7
+* GCC 4.8 to 5.0
+
 In order to create the build scripts, please run `cmake` with your preferred generator. For instance, `cmake -G "Unix Makefiles"` will create Makefiles, and to build the binaries, you will need to run `make`. For those users who need static linkage, the option `-DBUILD_STATIC=1` must be provided to the `cmake` command.
 
 In any case, two binaries will be created in the `bin` subfolder: `vcf_validator` (the main application) and `test_validator` (unit tests).