misc: update README

README.md

@@ -19,89 +19,25 @@ Rust inspired implementation of `Option[T]` and `Result[T]` for Go.
 // vanilla
 v, err := strconv.Atoi("1")
 if err != nil {
-	v = 1000
+    v = 1000
 }
 
 // shine
-r := shine.NewResult(strconv.Atoi("1")) // Result[int]
-v := r.UnwrapOr(1000)
+v := shine.NewResult(strconv.Atoi("1")).UnwrapOr(1000)
 ```
 
 #### Parsing URLs
 ```golang
-// vanilla
-u, err := url.Parse("https://github.com/")
-if err != nil {
-	return err
-}
-hostname := u.Host
-
-// shine
-r := shine.NewResult(url.Parse("https://github.com/")) // Result[*url.URL]
-return shine.ResultMap(r, func(u *url.URL) string{
-	return u.Host
-})
-```
-
-#### Reading JSON
-```golang
-// vanilla
-func jsonRead(fname string) (map[string]any, error) {
-    f, err := os.Open(fname)
+func ExampleVanilla() string {
+    u, err := url.Parse("https://github.com/")
     if err != nil {
-        return nil, err
+        return ""
     }
-
-    defer f.Close()
-    dec := json.NewDecoder(f)
-    var res map[string]any
-
-    return res, dec.Decode(&res)
-}
-
-
-// shine
-func jsonRead(fname string) Result[map[string]any] {
-    r := shine.NewResult(os.Open(fname))
-
-    return shine.ResultAndThen(r, func(f *os.File) Result[map[string]any] {
-        defer f.Close()
-
-        dec := json.NewDecoder(f)
-        var res map[string]any
-
-        return shine.NewResult(res, dec.Decode(&res))
-    })
-}
-```
-
-### Interoperability with `(T, error)` returns
-```golang
-func something() (string, error) {
-	return shine.NewOk("hello").UnwrapBoth() // (string, error)
-}
-```
-
-## Performance
-Since both `Result` and `Option` are wrapper-types and not natively built into the language like in Rust, they come with some overhead.
 
-Given the following benchmark:
-```golang
-// vanilla
-something, err := getSomethingErrornous()
-if err == nil {
-	doSomething(something)// no-op
-} else {
-	doSomethingElse(err)// no-op
+    return u.Hostname()
 }
 
-// shine
-r := shine.NewResult(getSomethingErrornous())
-if r.IsOk() {
-    doSomething(r.Unwrap())// no-op
-} else {
-    doSomethingElse(r.UnwrapErr())// no-op
+func ExampleShine() string {
+    return shine.ResMap(shine.NewResult(url.Parse("https://github.com/")), (*url.URL).Hostname).UnwrapOrDefault()
 }
 ```
-
-shine is 3 times slower than vanilla, with vanilla being at `1.248 ns/op` and shine at `3.617 ns/op` (MacBook Pro 2021 M1 Pro)