Update README.md

Add Mac description for qt, llvm, and gcc

README.md

@@ -13,8 +13,18 @@ This is a Cmake project and can be run in any C++ IDE (Integrated Development En
 
 <h3>Required Preinstallations</h3>
 
-Qt (for now)
-clang or gcc
+The Qt can be installed on a Mac using:
+
+```
+brew install qt
+```
+
+The compiler clang and gcc can be installed on a Mac using:
+
+```
+brew install llvm
+brew install gcc
+```
 
 If the tests are enabled `"EGOA_TEST_FRAMEWORK": "OfflineGoogleTestFramework"` the `"EGOA_TEST_FRAMEWORK_LOCATION"`, e.g., `"EGOA_TEST_FRAMEWORK_LOCATION": "external/googletest"`, needs a valid path to the test framework. If you prefer to manualy set the path, the <a href="https://github.com/google/googletest/tree/main">google test framework</a> can be cloned from https://github.com/google/googletest/tree/main, which is the easiest way to have a up-to-date version of the repository. Using the above example configuration run: