Improve composition (#37)

By moving the @TagBuilder property wrapper to the protocol, we don't need to write it every time.

Co-authored-by: Melvin Gundlach <[email protected]>

Author: melgu

README.md

@@ -182,14 +182,15 @@ public extension Guid {
 
 There are other built-in type-safe attribute modifiers available on tags.
 
- 
+
 ## Composing tags
 
 You can come up with your own `Tag` composition system by introducing a new protocol.
 
 ```swift
 protocol TagRepresentable {
 
+    @TagBuilder
     func build() -> Tag
 }
 
@@ -201,7 +202,6 @@ struct ListComponent: TagRepresentable {
         self.items = items
     }
 
-    @TagBuilder
     func build() -> Tag {
         Ul {
             for item in items {

Tests/SwiftHtmlTests/TagCompositionTests.swift

@@ -9,7 +9,7 @@ import XCTest
 @testable import SwiftHtml
 
 protocol TagRepresentable {
-    
+    @TagBuilder
     func build() -> Tag
 }
 
@@ -32,7 +32,6 @@ struct ListComponent: TagRepresentable {
         self.items = items
     }
 
-    @TagBuilder
     func build() -> Tag {
         Ul {
             for item in items {