version bump to 1.5.3

CHANGELOG.md

-# vNext
+# 1.5.3
 - Text panel now accepts html (for links to other dashboards, etc) (Issue #236)
 - Fix for Text panel, now changes take effect directly (Issue #251)
 - Fix when adding functions without params that did not cause graph to update (Issue #267)

package.json

@@ -4,7 +4,7 @@
     "company": "Coding Instinct AB"
   },
   "name": "grafana",
-  "version": "1.5.2",
+  "version": "1.5.3",
   "repository": {
     "type": "git",
     "url": "http://github.com/torkelo/grafana.git"