Regenerate README and bump version

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "vptr"
-version = "0.2.0"
+version = "0.2.1"
 authors = ["Olivier Goffart <ogoffart@woboq.com>"]
 edition = "2018"
 description = "Thin references to trait objects by embedding the virtual table pointer in the struct"
@@ -16,4 +16,4 @@ default = ["std"]
 std = []
 
 [dependencies]
-vptr-macros = {path = "./macros", version = "=0.2.0"}
+vptr-macros = {path = "./macros", version = "=0.2.1"}

README.md

@@ -64,6 +64,7 @@ This crates allows to easily opt in to thin references to trait for a type, by h
 pointers to the virtual table within the object.
 
 ```rust
+use vptr::vptr;
 trait Shape { fn area(&self) -> f32; }
 #[vptr(Shape)]
 struct Rectangle { w: f32, h : f32 }
@@ -73,7 +74,7 @@ struct Circle { r: f32 }
 impl Shape for Circle { fn area(&self) -> f32 { 3.14 * self.r * self.r } }
 
 // Given an array of Shape, compute the sum of their area
-fn total_area(list: &[ThinRef<dyn Shape>]) -> f32 {
+fn total_area(list: &[vptr::ThinRef<dyn Shape>]) -> f32 {
     list.iter().map(|x| x.area()).fold(0., |a, b| a+b)
 }
 ```
@@ -134,6 +135,17 @@ impl Shape for Point { fn area(&self) -> f32 { 0. } }
 let p = Point(1, 2, VPtr::new());
 let pointref = ThinRef::from(&p);
 assert_eq!(pointref.area(), 0.);
+
+// The trait can be put in quote if it is too complex for a meta attribute
+#[vptr("PartialEq<str>")]
+#[derive(Default)]
+struct MyString(String);
+impl PartialEq<str> for MyString {
+    fn eq(&self, other: &str) -> bool { self.0 == other }
+}
+let mystr = MyString("Hi".to_string(), VPtr::new());
+let mystring_ref = ThinRef::from(&mystr);
+assert!(*mystring_ref == *"Hi");
 ```
 
 ## License

macros/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "vptr-macros"
-version = "0.2.0"
+version = "0.2.1"
 authors = ["Olivier Goffart <ogoffart@woboq.com>"]
 description = "Procedural macros for the `vptr` crate"
 edition = "2018"