Update README.md

README.md

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 # passwordalchemy  
 (cryptographically insecure) toy password manage I wrote cos I was bored  
+![image](https://github.com/witchdocsec/passwordalchemy/assets/107813117/05ee3c0c-80fa-4076-9311-0f79bdd1656c)
+![image](https://github.com/witchdocsec/passwordalchemy/assets/107813117/8929a4d8-c8c1-4f8a-8614-795ea3c20298)
+
+# useage  
+
+## genkeys  
+```
+usage: passwordalchemy.py genkeys [-h] [-pk PRIVATEKEY] [-opk OLDPRIVATEKEY]
+
+options:
+  -h, --help            show this help message and exit
+  -pk PRIVATEKEY, --privatekey PRIVATEKEY
+  -opk OLDPRIVATEKEY, --oldprivatekey OLDPRIVATEKEY
+```
+
+## store
+```
+usage: passwordalchemy.py store [-h] -d DOMAIN -p PASSWORD
+
+options:
+  -h, --help            show this help message and exit
+  -d DOMAIN, --domain DOMAIN
+  -p PASSWORD, --password PASSWORD
+```
+
+## fetch
+```
+usage: passwordalchemy.py fetch [-h] -pk PRIVATEKEY -d DOMAIN
+
+options:
+  -h, --help            show this help message and exit
+  -pk PRIVATEKEY, --privatekey PRIVATEKEY
+                        path to private key pem file
+  -d DOMAIN, --domain DOMAIN
+```
+
+## update
+```
+usage: passwordalchemy.py update [-h] -d DOMAIN -p PASSWORD
+
+options:
+  -h, --help            show this help message and exit
+  -d DOMAIN, --domain DOMAIN
+  -p PASSWORD, --password PASSWORD
+```