Add experimental notice to test-compile and shell

src/rebar_eunit.erl

@@ -120,6 +120,7 @@ clean(_Config, _File) ->
     rebar_file_utils:rm_rf(?TEST_DIR).
 
 'test-compile'(Config, _File) ->
+    ?CONSOLE("NOTICE: Using experimental 'test-compile' command~n", []),
     ok = ensure_dirs(),
     %% Save code path
     CodePath = setup_code_path(),

src/rebar_shell.erl

@@ -33,6 +33,7 @@
 -export([shell/2]).
 
 shell(_Config, _AppFile) ->
+    ?CONSOLE("NOTICE: Using experimental 'shell' command~n", []),
     %% backwards way to say we only want this executed
     %% for the "top level" directory
     case is_deps_dir(rebar_utils:get_cwd()) of