changelog: updated master version to 2.6 and merged develop branch

CHANGELOG.md

-# 2.5.1 (unreleased)
+# 2.6.0 (unreleased)
+
+### New Table Panel
+* **table**:  New powerful and flexible table panel, closes [#215](https://github.com/grafana/grafana/issues/215)
 
 ### Enhancements
 * **CloudWatch**: Support for multiple AWS Credentials, closes [#3053](https://github.com/grafana/grafana/issues/3053), [#3080](https://github.com/grafana/grafana/issues/3080)

package.json

@@ -4,7 +4,7 @@
     "company": "Coding Instinct AB"
   },
   "name": "grafana",
-  "version": "2.5.1-pre1",
+  "version": "2.6.0-pre1",
   "repository": {
     "type": "git",
     "url": "http://github.com/torkelo/grafana.git"