[fix] add bower libs to gitignore

.gitignore

@@ -12,17 +12,11 @@
 /www/css/ionic.app.css
 /www/css/ionic.app.min.css
 
-/www/lib/angular
-/www/lib/angular-animate
-/www/lib/angular-messages
-/www/lib/angular-sanitize
-/www/lib/angular-ui-router
-/www/lib/angular-moment
-/www/lib/moment
-/www/lib/waves
+/www/lib/*
+!/www/lib/ionic
 /www/js/config.js
 /www/dist
 /hooks/playstore-config.json
 
 .directory
-www/js/config.js
+www/js/config.js
\ No newline at end of file