Add example for schemars attributes

docs/_includes/examples/schemars_attrs.rs

@@ -0,0 +1,27 @@
+use schemars::{schema_for, JsonSchema};
+use serde::{Deserialize, Serialize};
+
+#[derive(Deserialize, Serialize, JsonSchema)]
+#[schemars(rename_all = "camelCase")]
+pub struct MyStruct {
+    #[serde(rename = "thisIsOverridden")]
+    #[schemars(rename = "myNumber")]
+    pub my_int: i32,
+    pub my_bool: bool,
+    #[schemars(default)]
+    pub my_nullable_enum: Option<MyEnum>,
+}
+
+#[derive(Deserialize, Serialize, JsonSchema)]
+#[schemars(untagged)]
+pub enum MyEnum {    
+    StringNewType(String),
+    StructVariant {
+        floats: Vec<f32>,
+    }
+}
+
+fn main() {
+    let schema = schema_for!(MyStruct);
+    println!("{}", serde_json::to_string_pretty(&schema).unwrap());
+}