* update .gitignore

* update uhub.spec  for plugins system

* update example plugins.conf

* modify header RH init script

doc/plugins.conf

@@ -0,0 +1,12 @@
+# auth user
+# file={path for DB file with user auth information}
+plugin /var/lib/uhub/mod_auth_sqlite.so "file=/etc/uhub/users.db"
+
+#
+plugin /var/lib/uhub/mod_logging.so
+
+#
+# plugin /var/lib/uhub/mod_auth_simple.so
+
+#
+# plugin /var/lib/uhub/mod_example.so