rudimentary readme.md and fix missing protobuf dependency

README.md

@@ -0,0 +1,47 @@
+
+
+## Installing
+Extract the release zip and run:
+```python setup.py install```
+
+## Usage
+
+* *As a courtesy to other fans, please refrain from spoiling unreleased story contents if any are found after decrypting.*
+
+* **An android device with root access is required, such as an emulator**
+
+```
+Default behavior with no arguments is to attempt to decrypt the cache and export json lists of new and changed resources.
+
+optional arguments:
+  -r , --revision       The target cache revision to read during parsing for new assets. Defaults to None.
+  -d, --decrypt         Decrypt and export assets after processing the database. Defaults to False.
+  -e {all,new}, --export {all,new}
+                        Which assets to export. Defaults to new
+  -k , --key            Magic alphanumeric numbers.
+  -iv , --iv            Magic base64-ish numbers.
+```
+
+Place the encrypted cache file `octocacheevai` in the root folder next to `reincli.py`.
+It can be found at:
+
+`\data\data\com.square_enix.android_googleplay.nierspjp\files\octo\pdb\201\<numbers>\octocacheevai`
+
+The encrypted resources are located at:
+
+`\data\data\com.square_enix.android_googleplay.nierspjp\files\v1\201\`
+
+Move all of the files within to a folder in the script directory named `resources`. (Though only the ones with 32 character filenames such as `c2e196279db8b6a49db81e1a64cd344a` are necessary.)
+
+
+## Decrypting all resources
+```
+python reinkuro.py --decrypt --export all
+```
+
+## Decrypting new resources
+If it has been used before with an older cache version, the script may also decrypt only the new/changed resources found in the updated cache version.
+(This is the default behaviour)
+```
+python reinkuro.py --decrypt
+```

setup.py

@@ -22,7 +22,7 @@
 
 package_data = {"": ["*"], "reinkuro._clibs": ["kuro/*"]}
 
-install_requires = ["pycryptodome>=3.10.1,<4.0.0", "rich>=10.5.0,<11.0.0"]
+install_requires = ["pycryptodome>=3.10.1,<4.0.0", "rich>=10.5.0,<11.0.0", "protobuf>=3.17.3,<4.0.0"]
 
 setup_kwargs = {
     "name": "reinkuro",