add validate user's token method for v2 and bug fix for reauth
diff --git a/openstack/identity/v2/tokens/requests.go b/openstack/identity/v2/tokens/requests.go
index 074a89e..193847b 100644
--- a/openstack/identity/v2/tokens/requests.go
+++ b/openstack/identity/v2/tokens/requests.go
@@ -88,3 +88,15 @@
 	})
 	return result
 }
+
+// Validates and retrieves information for user's token.
+func Get(client *gophercloud.ServiceClient, token string) GetResult {
+    var result GetResult
+    _, result.Err = client.Get(CreateGetURL(client, token), &result.Body, &gophercloud.RequestOpts{
+        OkCodes: []int{200, 203},
+    })
+    if result.Err != nil {
+        return result
+    }
+    return result
+}
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diff --git a/openstack/identity/v2/tokens/results.go b/openstack/identity/v2/tokens/results.go
index 1eddb9d..dc09357 100644
--- a/openstack/identity/v2/tokens/results.go
+++ b/openstack/identity/v2/tokens/results.go
@@ -74,6 +74,11 @@
 	gophercloud.Result
 }
 
+// GetResult is the deferred response from a Get call.
+type GetResult struct {
+    gophercloud.Result
+}
+
 // ExtractToken returns the just-created Token from a CreateResult.
 func (result CreateResult) ExtractToken() (*Token, error) {
 	if result.Err != nil {
diff --git a/openstack/identity/v2/tokens/urls.go b/openstack/identity/v2/tokens/urls.go
index cd4c696..0bc51de 100644
--- a/openstack/identity/v2/tokens/urls.go
+++ b/openstack/identity/v2/tokens/urls.go
@@ -6,3 +6,8 @@
 func CreateURL(client *gophercloud.ServiceClient) string {
 	return client.ServiceURL("tokens")
 }
+
+// CreateGetURL generates the URL used to Validate Tokens.
+func CreateGetURL(client *gophercloud.ServiceClient, token string) string {
+    return client.ServiceURL("tokens", token)
+}
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