Fix eclipse update site (#173)

* fix message in plugin.xml

* fix wrong version such as "3.1.02.20170516"

* update CHANGELOG

CHANGELOG.md

@@ -2,7 +2,13 @@
 
 This is the changelog for SpotBugs. This follows [Keep a Changelog v0.3](http://keepachangelog.com/en/0.3.0/).
 
-## 3.1.0-RC2 (2017/??/??)
+## Unreleased (2017/??/??)
+
+### Fixed
+
+* Fix wrong version in Eclipse Plugin ([#173](https://github.com/spotbugs/spotbugs/pull/173))
+
+## 3.1.0-RC2 (2017/May/16)
 
 ### Added
 

eclipsePlugin/build.gradle

@@ -5,7 +5,7 @@ if (version.endsWith('-SNAPSHOT')) {
   version = version - '-SNAPSHOT' + '.' + new Date().format('yyyyMMdd') + '-' + System.currentTimeMillis()
 } else if (version.contains('-RC')) {
   // eclipse doesn't like the `-RC`, so we timestamp uniquely
-  version = version - '-RC' + '.' + new Date().format('yyyyMMdd') + '-' + System.currentTimeMillis()
+  version = version.substring(0, version.lastIndexOf('-RC')) + '.' + new Date().format('yyyyMMdd') + '-' + System.currentTimeMillis()
 }
 
 sourceSets {

eclipsePlugin/plugin_feature-candidate.xml

@@ -7,7 +7,7 @@
       plugin="@PLUGIN_ID@">
 
    <description url="https://spotbugs.github.io/">
-      This feature is a wrapper for the FindBugs plugin for installation via the Eclipse Update Manager.
+      This feature is a wrapper for the SpotBugs plugin for installation via the Eclipse Update Manager.
    </description>
 
    <copyright>