Update doc

Author: ice1000

README.md

@@ -1,9 +1,5 @@
-# plugin-template
+# Json for DevKt
 
-This is the template of the plugin project.
-
-Things to change before coding:
-
-+ `your-language-devkt` in [settings.gradle.kts](settings.gradle.kts)
-+ `your.package.name` in [build.gradle.kts](build.gradle.kts)
+Json support for devkt.
 
+Mention: this plugin supports json with comments.

src/com/intellij/devkt/json/Json.java

@@ -6,6 +6,7 @@
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.jetbrains.kotlin.com.intellij.psi.PsiElement;
+import org.jetbrains.kotlin.com.intellij.psi.PsiErrorElement;
 import org.jetbrains.kotlin.com.intellij.psi.tree.IElementType;
 
 public class Json<T> extends ExtendedDevKtLanguage<T> {
@@ -26,6 +27,7 @@ public boolean satisfies(String fileName) {
 
 	@Override
 	public void annotate(PsiElement psiElement, AnnotationHolder<? super T> annotationHolder, ColorScheme<? extends T> colorScheme) {
+		if (psiElement instanceof PsiErrorElement) annotationHolder.highlight(psiElement, colorScheme.getUnknown());
 	}
 
 	@Nullable