Add separate docs for v0.8/v1

docs/_includes/examples_v0/custom_settings.rs

@@ -0,0 +1,24 @@
+use schemars::{gen::SchemaSettings, JsonSchema};
+
+#[derive(JsonSchema)]
+pub struct MyStruct {
+    pub my_int: i32,
+    pub my_bool: bool,
+    pub my_nullable_enum: Option<MyEnum>,
+}
+
+#[derive(JsonSchema)]
+pub enum MyEnum {
+    StringNewType(String),
+    StructVariant { floats: Vec<f32> },
+}
+
+fn main() {
+    let settings = SchemaSettings::draft07().with(|s| {
+        s.option_nullable = true;
+        s.option_add_null_type = false;
+    });
+    let gen = settings.into_generator();
+    let schema = gen.into_root_schema_for::<MyStruct>();
+    println!("{}", serde_json::to_string_pretty(&schema).unwrap());
+}