Add tests

Author: Atry

js/js.sbt

@@ -4,6 +4,8 @@ enablePlugins(Example)
 
 libraryDependencies += "com.thoughtworks.binding" %%% "jspromisebinding" % "12.0.0"
 
+libraryDependencies += "org.lrng.binding" %%% "html" % "1.0.3" % Optional
+
 addCompilerPlugin("org.typelevel" %% "kind-projector" % "0.10.3")
 
 requireJsDomEnv in Test := true

shared/src/main/scala/com/thoughtworks/binding/bindable/package.scala

@@ -193,7 +193,57 @@ package bindable {
 
   }
 
-  /** A dependent type class that witnesses a type that can be converted to a `BindingSeq[Value]`. */
+  /** A dependent type class that witnesses a type that can be converted to a `BindingSeq[Value]`.
+    * 
+    * @example This type class is internally used in the [[org.lrng.binding.html]] annotation, automatically converting
+    *          any compatible values into [[com.thoughtworks.binding.Binding.BindingSeq]], injecting into a HTML template.
+    *          {{{
+    *          import org.lrng.binding.html
+    *          import org.scalajs.dom._
+    *          @html
+    *          def myBinding = <span>Single Element</span>
+    * 
+    *          @html
+    *          def myBindingSeq = <span>Element 1</span><span>Element 2</span>
+    * 
+    *          @html
+    *          def myBindingOrBindingSeq(singleElement: Boolean) = {
+    *            if (singleElement) {
+    *              <span>Single Element</span>
+    *            } else {
+    *              <span>Element 1</span><span>Element 2</span>
+    *            }
+    *          }
+    * 
+    *          @html
+    *          def mySection = <section>
+    *            {myBinding.bind}
+    *            {myBinding}
+    *            {myBindingSeq}
+    *            {Binding{myBindingSeq.all.bind.toSeq}}
+    *            {myBindingSeq.all.bind.toSeq}
+    *            {myBindingOrBindingSeq(true)}
+    *            {myBindingOrBindingSeq(false)}
+    *          </section>
+    * 
+    *          val root = document.createElement("span")
+    *          html.render(root, mySection)
+    * 
+    *          root.innerHTML should be(
+    *            """<section>
+    *              <span>Single Element</span>
+    *              <span>Single Element</span>
+    *              <span>Element 1</span><span>Element 2</span>
+    *              <span>Element 1</span><span>Element 2</span>
+    *              <span>Element 1</span><span>Element 2</span>
+    *              <span>Single Element</span>
+    *              <span>Element 1</span><span>Element 2</span>
+    *            </section>"""
+    *          )
+    *          }}}
+    * 
+    *  
+    */
   @typeclass
   trait BindableSeq[-From] {
     type Value