diff --git a/README.md b/README.md
new file mode 100644
index 0000000..78edaa9
--- /dev/null
+++ b/README.md
@@ -0,0 +1,16 @@
+# Thumbor for rust
+
+## Usage
+
+```rust
+use thumbor::Server;
+
+let server = Server::new_secured("http://localhost:8888", "my-security-key");
+
+let builder = server.url_builder()
+    .resize((300, 200))
+    .smart(true)
+    .build();
+
+let url = builder.build("/path/to/my/image.jpg");
+```
diff --git a/src/server.rs b/src/server.rs
index 9dd6cb2..26a9961 100644
--- a/src/server.rs
+++ b/src/server.rs
@@ -17,6 +17,12 @@ impl From<String> for Security {
     }
 }
 
+/// ```
+/// use thumbor::Server;
+/// 
+/// let server = Server::new_secured("http://localhost:8888", "my-security-key");
+/// let server = Server::new_unsafe("http://localhost:8888"); // Don't use this in production !
+/// ```
 #[derive(Default, Clone)]
 pub struct Server {
     pub origin: String,
diff --git a/src/settings/filter.rs b/src/settings/filter.rs
index 55c5030..5edaccd 100644
--- a/src/settings/filter.rs
+++ b/src/settings/filter.rs
@@ -108,10 +108,9 @@ pub enum Filter {
     },
 }
 
-impl fmt::Display for Filter {
-    #[allow(clippy::too_many_lines)]
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        let args = match self {
+impl Filter {
+    fn args(&self) -> Vec<String> {
+        match self {
             Filter::AutoJPG
             | Filter::Cover
             | Filter::Equalize
@@ -216,13 +215,18 @@ impl fmt::Display for Filter {
                 }
                 args
             }
-        };
+        }
+    }
+}
 
+impl fmt::Display for Filter {
+    #[allow(clippy::too_many_lines)]
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         let name = match self {
             Filter::Custom { name, .. } => name,
             _ => self.as_ref(),
         };
 
-        write!(f, "{name}({})", args.join(","))
+        write!(f, "{name}({})", self.args().join(","))
     }
 }