Add make test explanation

README.md

@@ -35,13 +35,14 @@ the Makefile).
 The `premake.make` typically defines some Make variables, whereas the
 `postmake.make` typically contains extra Make targets.
 
-The `premake.make` is mandatory, because it defines the **name** of the tool or
-library, and its **version**. This is also where you declare external
+The `premake.make` is mandatory, because it defines the *name* of the tool or
+library, and its *version*. This is also where you declare external
 dependencies.
 
-Available Make targets are:
+Available Make targets for your project are:
 
 - `make` will build the tool or library;
+- `make test` will build and run tests, using the Boost Unit Test Framework;
 - `sudo make install` will install it, and all of its accompanying files;
 - `make clean` will remove compiled object files, but will keep a previously
   built tool or library, and the precompiled header;