help : can't build nitrogen

Hi,

I just downloaded nitrogen from github : I'd love to try it.

$ make
mkdir -p ebin
mkdir -p test/ebin
erl -make
Recompile: ./test/src/test_suite
./test/src/test_suite.erl:5: can't find include lib "eunit/include/eunit.hrl"
./test/src/test_suite.erl:7: Warning: function all_test_/0 is unused
erl -noshell \
        -pa ebin \
        -pa test/ebin \
        -s test_suite test \
        -s init stop
{"init terminating in do_boot",{undef,[{test_suite,test,[]},{init,start_it,1},{init,start_em,1}]}}

Crash dump was written to: erl_crash.dump
init terminating in do_boot ()
make: *** [test] Erreur 1

In quickstart it doesn't work either. What did I did wrong ?
Thanks