新增 getTemplateByString(String content, String cacheKey)

src/main/java/com/jfinal/template/Engine.java

@@ -210,7 +210,7 @@ public class Engine {
 		}
 		return template;
 	}
-
+	
 	public Template getTemplateByString(String content, String cacheKey) {
 		if (cacheKey == null) {
 			return buildTemplateBySource(new StringSource(content, cacheKey));