Use rebar.config to also compile lib/. Move ebin/egs.app to src/egs.app.src.

ebin/.gitignore

@@ -1 +1,2 @@
 *.beam
+egs.app

rebar.config

@@ -0,0 +1,16 @@
+%%	This file is part of EGS.
+%%
+%%	EGS is free software: you can redistribute it and/or modify
+%%	it under the terms of the GNU Affero General Public License as
+%%	published by the Free Software Foundation, either version 3 of the
+%%	License, or (at your option) any later version.
+%%
+%%	EGS is distributed in the hope that it will be useful,
+%%	but WITHOUT ANY WARRANTY; without even the implied warranty of
+%%	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+%%	GNU Affero General Public License for more details.
+%%
+%%	You should have received a copy of the GNU Affero General Public License
+%%	along with EGS.  If not, see <http://www.gnu.org/licenses/>.
+
+{erl_opts, [{src_dirs, ["lib"]}]}.

src/egs.app.src

@@ -18,6 +18,7 @@
 		egs_login,
 		egs_char_select,
 		egs_game,
+		nbl,
 		reloader,
 		psu_game,
 		psu_patch,