Merge branch 'release/2.5.5'

Author: surma

README.md

@@ -4,6 +4,8 @@ Key targets were the support for both long and short flag versions, mutually
 exclusive flags, and verbs. Flags and their corresponding variables are defined
 by the tags in a (possibly anonymous) struct.
 
+![](https://circleci.com/gh/voxelbrain/goptions.png?circle-token=27cd98362d475cfa8c586565b659b2204733f25c)
+
 # Example
 
 ```Go
@@ -58,4 +60,4 @@ Verbs:
 ```
 
 ---
-Version 2.5.4
+Version 2.5.5

circle.yml

@@ -0,0 +1,4 @@
+test:
+  override:
+    - go list -f "{{range .TestImports}}{{.}} {{end}}" . | xargs -r go get
+    - go test

goptions.go

@@ -65,7 +65,7 @@ import (
 )
 
 const (
-	VERSION = "2.5.4"
+	VERSION = "2.5.5"
 )
 
 var (