Update changelog for 3.1.8

gau1991 · gau1991 · commit 42e3224fe33f · 2015-05-22T18:20:18.000+05:30
diff --git a/CHANGELOG.txt b/CHANGELOG.txt
@@ -1,3 +1,8 @@
+v 3.1.8 - May 22, 2015
+- Fixed PHP Failed to Restart after Upgrade #550
+- Improved ee stack services command
+- Minor fix and improvements
+
 v 3.1.7 - May 21, 2015
 - Fixed site blank issue after nginx stack upgrade on Debian
 - Improved update script
