Add LemonStand gitignore.

LemonStand.gitignore

@@ -0,0 +1,20 @@
+boot.php
+index.php
+install.php
+/config/*
+!/config/config.php
+/controllers/*
+/init/*
+/logs/*
+/phproad/*
+/temp/*
+/uploaded/*
+/installer_files/*
+/modules/backend/*
+/modules/blog/*
+/modules/cms/*
+/modules/core/*
+/modules/session/*
+/modules/shop/*
+/modules/system/*
+/modules/users/*