feat: update app to support Appwrite 0.12+ (appwrite#33)

Closes appwrite#32

README.md

@@ -20,17 +20,17 @@ We need to make a few configuration changes to your Appwrite server.
 ![Create Web App](https://user-images.githubusercontent.com/20852629/113019434-3c27c900-919f-11eb-997c-1da5a8303ceb.png)
 
 2. Create a new collection with the following properties
-* **Rules**
-
-Add the following rules to the collection. 
-> Make sure that your key exactly matches the key in the images
+* **Attributes**
+* 
+Add the following attributes to the collection. 
+> Make sure that your Attribute ID exactly matches the key in the images
 
 <p align="center">
-<img src="https://user-images.githubusercontent.com/20852629/113019972-c3753c80-919f-11eb-9b3a-c3690785bbf4.png" alt="Content Rule" width="400"/>
+  <img width="744" alt="Content Attribute" src="https://user-images.githubusercontent.com/29069505/155617343-6ff674b3-9809-42ac-8175-0f76271b1189.png">
 </p>
 
 <p align="center">
-<img src="https://user-images.githubusercontent.com/20852629/113020008-cec86800-919f-11eb-8cc2-473f8d15fc3f.png" alt="IsComplete Rule" width="400"/>
+  <img width="744" alt="IsComplete Attribute" src="https://user-images.githubusercontent.com/29069505/155617393-f30270af-aa07-4392-a7b2-75b8ce9c60da.png">
 </p>
 
 * **Permissions**