docs: update 2.1.6

Author: airingursb

README.md

@@ -41,6 +41,10 @@
 
 ## 2.x
 
+### 2.1.6 / 2018-10-29
+
+- 优化同步策略，修复极端情况下日记同步失败的问题
+
 ### 2.1.5 / 2018-10-17
 
 - 新增了定时脚本，修复每月未重置次数的 bug

ios/twolife.xcodeproj/project.xcworkspace/xcuserdata/airing.xcuserdatad/UserInterfaceState.xcuserstate

@@ -17,7 +17,7 @@
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleShortVersionString</key>
-	<string>2.1.5</string>
+	<string>2.1.6</string>
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleURLTypes</key>