update readme

README.md

@@ -2,6 +2,8 @@
 
 ExDatalog is a library for defining and querying facts and rules in a Datalog-inspired logic programming system. It allows users to create complex logical rules and infer new facts based on these rules and the existing facts.
 
+ExDatalog is a library for defining and querying facts and rules in a Datalog-inspired modelled as ReBAC (Relationship-Based Access Control).
+
 ### Installation
 
 To use ExDatalog in your project, add it to your dependencies:
@@ -145,7 +147,7 @@ This includes facts inferred by the parent and ancestor rules:
 
 #### Querying with Specific Conditions
 
-You can also query with specific conditions using the where clause. For example, to fild all where Alice matches the any rule:
+You can also query with specific conditions using the where clause. For example, to find all where Alice matches the any rule:
 
 ```elixir
 {:ok, results} = ExDatalog.evaluate_query(datalog, %{rule: "*", where: %{object_id: "Alice"}})
@@ -174,6 +176,18 @@ This should output:
  ]
 ```
 
+### Inspiration
+
+ExDatalog draws inspiration from several advanced systems and concepts in the field of access control and logical inference:
+
+#### Google Zanzibar
+
+Google Zanzibar is a consistent, highly available, and massively scalable global authorization system used by Google to manage permissions across its services. For more details, you can refer to the (Google Zanzibar whitepaper)[https://research.google/pubs/pub48190/].
+
+#### Permify
+
+Permify is an open-source authorization service that provides a Zanzibar-like experience for developers. It simplifies complex permission management using a rule-based approach. For more insights, you can read about it (here)[https://permify.co/post/google-zanzibar-in-a-nutshell/].
+
 ### Conclusion
 
 ExDatalog provides a flexible and powerful way to define and query logical rules and facts. By using rules and facts, you can model complex relationships and make inferences in various domains, such as, authorization, organizational management, fraud detection, and more.