add a example config files

example.yaml

@@ -0,0 +1,12 @@
+dest: /path/to/store/backup/files  # The programs will store database and backup files in this location
+programs:
+  - name: Your program name  # This name is used to identify different application.
+    base: /path/to/save/path  # Must be absoulte path.
+    files:
+      - BGI.gdb  # A single save file. Must be relative path.
+      - type: path
+        path: folder  # path to a folder. All subfolders will include. Must be relative path.
+      - type: leveldb  # module plyvel is needed to support this type. This will store leveldb database to a single file database (sqlite3)
+        path: leveldb # path to leveldb. Must be relative path.
+        domains:  # optional. Just backup minor domains in localstorage database. Only chromium is tested.
+          - some domain