Update README

README.md

@@ -1,17 +1,11 @@
 [![Build Status](https://jenkins.ci.cloudbees.com/job/plugins/job/typetalk-plugin/badge/icon)](https://jenkins.ci.cloudbees.com/job/plugins/job/typetalk-plugin/)
 
-This is a Jenkins plugin which notifies to Typetalk ( https://typetalk.in/ )
+This is a Jenkins plugin which notifies to [Typetalk](https://typetalk.in/).
+See [Wiki page](https://wiki.jenkins-ci.org/display/JENKINS/Typetalk+Plugin) for more details.
 
 # How to build
 - ref : https://wiki.jenkins-ci.org/display/JENKINS/Gradle+JPI+Plugin
 
-## Import to IDE
-
-```
-gradle cleanEclipse eclipse
-gradle cleanIdea idea
-```
-
 ## Launch for development
 
 ```
@@ -25,3 +19,8 @@ gradle clean jpi
 ```
 
 If you don't install gradle, you can use gradlew / gradlew.bat instead of gradle.
+
+# Restriction
+
+Now you cannot build this plugin with JDK8.
+You may be able to build it with JDK8 after updating "Gradle JPI Plugin".