Update README.md

Added change log

Author: sanderv32

README.md

@@ -14,3 +14,33 @@ Example how your the webhook in Gogs should look like:
 ### About integration tests
 
 This project has some integration tests available. For more details see the [dedicated readme](about_integration_tests.md).
+
+### Change Log
+#### Version 1.0.12 (Mar 8, 2018)
+- Expose REF and BEFORE payload to environment variables (GOGS_REF and GOGS_BEFORE) 
+
+#### Version 1.0.11 (Feb 26, 2018)
+- Use `[IGNORE]` at start of commit subject to ignore the push
+- Multibranch pipeline support (untested)
+
+#### Version 1.0.10 (Apr 10, 2017)
+- Allow empty password [[PR#19](https://github.com/jenkinsci/gogs-webhook-plugin/pull/19)]
+
+#### Version 1.0.9 (Mar 8, 2017)
+- Added new Gogs authentication but keeps it compatible with old version [[PR#16](https://github.com/jenkinsci/gogs-webhook-plugin/pull/16)]
+- Added folder support [[PR#12](https://github.com/jenkinsci/gogs-webhook-plugin/pull/12)]
+
+#### Version 1.0.8 (Dec 20, 2016)
+- Fixes impersonation problem of v1.0.7
+
+#### Version 1.0.7 (Dec 6, 2016)
+- Added Gogs secret per job [[PR#3](https://github.com/jenkinsci/gogs-webhook-plugin/pull/3)]
+
+#### Version 1.0.6 (Sep 5, 2016)
+- Added pipeline support.
+
+#### Version 1.0.4 (Jul 4, 2016)
+- Added CSRF protection [[JENKINS-37149](https://issues.jenkins-ci.org/browse/JENKINS-37149)]
+
+#### Version 1.0 (Jul 21, 2016)
+- First release