:+1: version and update docs

CHANGES.md

@@ -1,7 +1,11 @@
 CHANGES
 ========
 
-## 3.1.6-RC
+## 3.1.7-RC
+
+* 
+
+## 3.1.6
 
 * Feature: Support [blockdiag](http://blockdiag.com)
 * Feature: Add `BLOCKDIAG_URI` environment variable

package.json

@@ -1,6 +1,6 @@
 {
   "name": "growi",
-  "version": "3.1.6-RC",
+  "version": "3.1.7-RC",
   "description": "Team collaboration software using markdown",
   "tags": [
     "wiki",