updated README and added .gitignore

.gitignore

@@ -0,0 +1 @@
+rootfs

README.md

@@ -1 +1,13 @@
-# RC - boot scripts manager for simple linux (service manager)
+# RC - boot scripts manager for simple linux (service manager)
+
+## Filetree
+
+```
+/
+└── usr
+    ├── bin
+    │   └── rc
+    └── share
+        └── rc
+            └── orders
+```